I've got a Hobie pro Angler, and no it doesn't have to be registered as long as I don't put a motor on it. Do I fly fish from it? Rarely as I have a couple of inflatables to use on the trout ponds. When I use it for trout its on large waters where I can find and fish water that the foot fin and short oared guys can't get to. I primarily bought the PA for salt water salmon fishing and it has been a superb platform for that. I can stand and cast as its very stable. That said I'm and old guy who doesn't have the balance that he once had. Hobie now offers in their parts catalog an option called the Hobie H-Bar that is a folding support for stand up fishing. Its on my Christmas wish list. Its a big wide, and heavy yak, and is a pig if I have to paddle it. Particularly since I have a decent fish finder, downrigger, and 4 rod holders mounted. I haul it around in the back of my pickup. I landed over 100 salmon in 2010 and nearly 225 this season (mostly pinks). I've had it in the Snohomish, lower Cowlitz, Columbia, lower Vedder rivers but would never attempt to use it serious running water. I'm a fisherman first and a yakker second and I prefer to have both hands free. The Mirage pedal drive is terrific for my purpose.