you could get a trailer....
there are many options for yaks. the smaller ones tend to get thrown about a bit and not good for open ocean or your stomach. 11ft would be the minimum id take out. your definately not going to be able to fish the structure in the harbor from a yak like a tube. they move quick and its a constant battle to stay on structure. the peddles would help alot here or wear some fins and sit sideways.
go check out OEX or any kayak shop really to see if anything pops out. they look alot different in person than on google images. you could even pick out a few and go demo them in the local bay/pond.