Don't mind if I do.
Jet boats=NO! I will concede however that if they only run downstream so that the waves follow the normal flow of the river they should be allowed.
Horses? Apparently their are many on here that know much about horses other then that they, like all animals crap in the woods, or the water if it's handy. I don't understand why that would be a big problem? It's kind of roulette if and when it gets to the water. Now if you stop and consider what happens to a soft river bank during a heavy rain after multiple 1200# critters with big hooves have ravaged the entry and exit and done the heavy work to create new gulleys entering the river carry mud, then it would be horses=NO.
ATV's running across the river, why? I've only seen this once and I have to admit it did save the drivers from walking the 50 yards to the gravel bar on the other side. But, AYV's=NO
I don't have a problem with roads, at least in moderation. I do think they should stop above the flood level, stop with boulders and serious fines for those too lazy to carry a canoe to the water and think that driving around is OK for them. Roads coming close opens the river to more people on foot or willing to haul a craft to the water.
This means a lot more people around to hear the tree and support keeping the river a river and not a highway.