I've used my bucks bag out on northeastern flats around Cape Cod, although not bonefish country the flats are abundant. I've been toying with the idea of getting a big pontoon rig after using kayaks and being left a little unsatisfied. Wind is definitely an issue. Another is that the materials are typically not made for saltwater use.
They should adapt the paddleboat concept to a lowrider flats pontoon boat to leave both hands free.