I use a Harbor Freight trailer w/ 12" tires for salt water and fresh water. I usually do not back it into the water but just close to the ramp and then either unload at the water edge or use the cart from there. I put a 4x8 plywood floor on it and that is the best way to store and transport the PA. Underneath the deck I have rod and paddle storage and a cross bar on the top to haul 2 other yaks as well.
My little trailer actually tilts and I have added about 30" to the tongue and a front post with a winch on it so I do not lift at all...just back/roll trailer up to the nose of the PA, hook the winch strap around the front handle and start winching. It slides right onto the deck and tilts back down as it is going forward.
I trailer it at up to 75 and 80 mph with no problem and you don't even really know it is back there. The cross bars on the top for the other yak give me the visibility to back it up with little problem.
So, that totally would work with a little work and you would not have any problem with that setup.
Of course we are just crazy coon asses over here.