I've seen Kayakman7's rig, it is as cool as it gets. By reversing his tramps and AKA bars (coolest idea ever btw) he is able to get what he wants out of his boat.
Doing exactly what you want to do is really simple and easily done, you don't need an R&D team to figure it out. Just take your right rear AKA bar and snap it into the left front AKA pocket. Do the same with the other one. Now take the front AKA bars and place them in the back.
Now put the AMA's out and mark the new position where you want to drill for the new ball. If it was me I would leave the old ball alone and just order two more from one of the on line dealers or your local dealer. Of course you can just thread the plastic on the gunwale and screw the new ball in temporarily to just try it out, but eventually you will need something a bit stronger. What I would do is tap a hole into a small aluminum plate, I would the grab one of my spare nylon AKA sheer bolts and saw a small flat screw driver slot into the end (so it can be removed later), now take some light fishing line and fish it thru the new hole you just drill into the hull. Now run the nylon screw into the plate (upside down) tie the fishing line to the cross hole, now gob some contact adhesive or silicone to the top of the plate. Now pull in your fishing line and pull the nylon bolt up thru the hole and hold it up against the inside of the hull until the adhesive sets up (I usually leave it overnight). Next morning cut the fishing line and unscrew the nylon bolt out the bottom of the hole and let it drop (you can fish it out of the hull later just by tipping the boat up). Walla you now just screw the new ball into place and it should be as secure as the original ball. Now you can rig your Island how you like it, and can always put it back to original if you ever decide to sell the boat. If it doesn't work out and you want to change it back to original just remove the ball and either screw in a stainless buttonhead into the hole, or take your handy dandy Hobie plastic welder (everyone should have one, they are awesome) and fill the hole with matching weld. If you never plan to use tramps, you can also just purchase an extra set of rear AKA bars (I've seen them on line for $119 dollars each, and just put them on the front instead of the original front AKA bars. By doing it this way you can actually have two braces on each side if you so desire, just flip the one your not using into it's parked position and lock the one you want to use at the moment. If you get into some rough water and start getting scared, just engage the other brace as well (for added safety). You should be able to reach either brace set from within your cockpit. Personally I have never had my boat out without the tramps mounted on the boat, without the tramps I'm trapped in that seat and I can't hike out to balance the boat while sailing, the whole point on any trihull is to use your weight to keep those AMA's out of the water completely. We use our boat mostly for snorkeling and diving (offshore mostly in the keys) to get in or out of the boat we just sit on the AMA's climb onto the tramps then take off. Actually I have never folded my AMA's in for any reason, I always fold them out on the trailer, lash the tramps, and do all my rigging in the parking lot, then back up to the water to launch, when done sailing I just park the boat, back up to the water and pull the boat onto the trailer with the AMA's out and the tramps on. I sometimes pull the sail out and lay it across the hull before putting it on the trailer but not always (depending on the overhead clearance in the parking lot). I then pull away from the water and finish folding the AMA's, remove the tramps, and batton everything down for transport (basically toss everything into the boat and strap it down the rest of the way). Around here anyway most of the ramps are very busy with people waiting in line to launch and retrieve. To launch I just push off spin the boat around, slip the mirage drive in, lock the rudder down and I'm off on another exciting adventure. I almost always pedal away from the launch area before ever worrying about any sails and such (as I have a reputation of bouncing off boats and bouys in the crowded harbor). Another pointer about maneuvering around crowded harbors is you can spin your mirage drive around for reverse if you ever need it. I usually have my paddle in hand as well (just in case I need it to fend off other boats and docks (the TI is much bigger and not the most maneuverable of crafts in tight places. As an example I use the brail method to travel thru the Adams Waterway in Key Largo (lol).
Hope this helps
FE
PS: I've never fished, or had any reason to fold my AMA's in (just being honest). If I were to ever start fishing once I got ready to pull the fish in I would just sit on the AMA on the edge of the boat (when snorkeling we always have people sitting on the AMA's coming on and off the boat from the water (it's the easiest way to board, especially when you have 60 lbs of scuba diving gear on).
Everyone meet the Adams-waterway in Key Largo (the only place to cross from Gulf side (where all the resorts are) to Atlantic side (where all the great diving is), definitely not sailing friendly....
