I know I'm going to be lambasted for this, but I feel any of the aluminum trailers out there are way too expensive. My opinion is I have a TI, I only want to get it to and from the water from my house (a 15 minute drive thru town every weekend), I don't need a trailer that will last me 20 years. I have no intention of ever dunking my trailer into the water (why would anyone ever do that with a 200 lb boat). THe trailer comes with all the paperwork necessary to title and license the trailer (no inspections neccessary, I'm pretty sure home built trailers have to pass an inspection, and certification before they can be titled).
I ended up buying a Harbor Freight 4 x 4 utility trailer for $140 bucks, and made some minor modifications to make it work with the TI (basically extending the tongue). In retrospect I should have probably bought the boat trailer version which is a little more expensive (
http://www.harborfreight.com/600-lb-cap ... -5002.html ), This would have saved me a few hrs of labor and another $100 bucks worth of extra aluminum. I have seen a lot of TI trailers around here (there are tons of TI's in this area and they all seem to have the Trailex trailers with the Hobie cradles).
After looking at the Hobie cradles closely, I thought about it, and I don't think I have ever seen another boat trailer with the cradles mounted crossways, almost all boat trailers I have seen have carpeted rails mounted in the same direction you pull the boat onto. Instead of spending a great deal of money on the custom Hobie cradles I elected to use about $10 dollars worth of PVC tubing mounted on 11 inch centers. The PVC bunks I believe support the hull much more evenly (IMO).
Here is a pic of my $140 dollar Harbor freight trailer with a couple minor mods.

Here is a pic of the trailer itself (note: I have since put on longer PVC bunks (around ten ft long), and a little larger diameter PVC

Every couple months we go down to our other place in Key West for a week or so (when we can). It's 350 miles each way. I went to Walmart and bought 2 american made Carlisle 12 inch tires with rims (they were about $50 bucks ea) that I bolt on when we go on long trips (I don't trust the Chinese 8 inch tires on the highway). I usually pack the bearings when I do the change, just to make sure. I prefer the 8 inch tires in town locally because the trailer is much lower (just handier for me).
Even if I completely replace the bearings every year, I'm still money ahead (bearings are cheap).
I always back the trailer down to the water, then pull the boat off, when I return I pull the trailer to the waters edge and either pull the boat back on the trailer or if I'm exhausted I use my $25 dollar Harbor freight winch to haul the boat onto the trailer.
Think about it, as soon as you get home you have to hose everything off with fresh water anyway, the trailer then goes into the garage with the boat on it (takes all of five minutes). I believe the trailer weighs around 140 lbs
Everything I did mod wise to the trailer was done over one weekend with a hack saw and cordless drill, that's it, nothing fancy. The orange straps I think were $12 bucks at Home Depot (for a 4 pack of straps).
I've had the trailer now for at least a couple years, and am out in salt water every weekend, The trailer is still going strong with no issues, of course there is a little surface rust in a few areas, but one thing I have found out, is if you do nothing about the rust (just rinse it off with fresh water and let it dry) Once a layer of rust forms on the surface it protects the metal underneath (basically doesn't get any worse for a long long time). Only when you try to repair the rust, and cover it with paint, does it rust away to nothing in a short period of time (because the paint traps the salty dampness). After a couple years the only rust is mainly concentrated on the 3 cross bars, the main frame side rails are much thicker metal, and look to be holding up with no issues, I have already replaced the rear most cross bar with 2" angle aluminum, basically cut to length with a hack saw, and two bolt holes drilled in, just unbolted the rusty piece and bolted in the aluminum (about $10 bucks worth of aluminum and fifteen minutes work). The other two cross bars are still going strong, I will replace them only when needed (I'm guessing in a year or two).
Who cares about the axle and springs, they will outlast the rest of the trailer, and are easily replaced anyway (I'm sure everybody uses all the same axles, springs, and bearings anyway (all pretty much off the shelf commodity items), and not very expensive.
An aluminum trailer with all the trimmings and Hobie cradles I believe is around $1500 bucks, If I buy a new $140 dollar Harbor freight trailer every five years, That's fifty years of trailers for the same amount of money as one aluminum trailer (though I doubt the boat itself will last more than five or ten years), and I won't be around in 5.
Obviously if you have a sailing club image to keep up (captains hat, white shirt, shorts, and shoes), personally I don't care about images, I'm just practical and want to get my boat to the water and back easily every weekend. Of course if you have an endless supply of money ( I don't), just get the Aluminum trailer. However If I had the money (I don't) I would buy the Trailex, they look really well made, but I would replace the 8 inch tires with 12 inch american made Carlisle's. ( We are long time campers with way over 200k miles traveling with trailers in tow in the last few yrs,
good quality brand american made (properly rated) tires are very important to us).
Obviously all just my opinions
FE
PS: The only downside to owning this trailer is every weekend I park my car in the lot with the trailer hooked onto the car and go out sailing, and every weekend some guy puts his business card on my windshield ('trailers are us' or something like that, I have I swear 30-40 of his business cards now), which I think is hysterical, he has more money invested in coming out and putting his cards on my car every weekend than I have in the whole trailer ( LOL), true story.