Hey Ninja, how long is the jetski trailer you found? How far out the back of the trailer does your yak hang if any?
Standard single jet ski trailer (Shorelander Tadpole). Close to 11' long. About 3' of the yak hangs over the back once I found the balance point by moving the winch stand all the way forward and widened the bunks. I just tie a red rag on the back and haven't had any issues with "johnny law". I have also removed the fender wells and added the biggest tire the hub can handle to minimize side to side wobble when driving down the highway at 75 mph. Easy peasy to launch and recover for sure and I don't have to take anything out except my trolling motor to transport/store it.
I'll try and snap a picture this weekend and post it here Tony.