Hi Gary. I purchased a Trailex SUT 220-S Ultralight trailer. Perfect for the AI. Not an oz more weight or an inch longer than needed. Tracts perfectly. Too short for use with an TI. So if you have a TI in your future and want to use the trailer, you had better beef up top the SUT 350-S or the double version for 2 boats.
Here is a link to the SUT 250-S
http://www.austinkayak.com/products/14833/Trailex-Ultra-Light-Duty-Boat-Trailer-with-Leaf-Springs-SUT-220-S.htmlThe wooden V-supports make it a breeze to screw your PVC bunks to the trailer. The frame is ideal to support the square Ama supports with nothing more than large air duct zip ties. I would do it this way all over again but extend the PVC bunks back 6-12in and heat bend them down and maybe out at a slight angle to allow the boats bow to find the bunks when loading.
The lights are visable but I switched to LED lights after the light bulbs kept going out with a few dips in the water. Wow..., LED are very bright. Visability is not a problem with the boat on the trailer as long as you are about 5 feet or more back. I think the LED lights on the trailer catch their eye way before my cars tail lights now.