Re: airboats anyone?
Primarily designed for extremely shallow water to damp grass running.
Large area required for engine/ruddders.
Very noisy as stated, whirring prop and engine.
Requires large hp engine to run a boat of any size.
Efficiency is poor due to slippage in air and hull resistance of water. Burn disproportionate quanty of fuel for distance traveled.
Dangerous sitting in front seat, up high so that you can see over the swamp grass, aquatic weeds. Striking a submerged log on one side could eject you. If you wear a belt you stand the chance of several hazards.......and blasting thru swamp grass, where you can hardly see at 30 mph is hazardous to your health.......including the marsh bugs that hit you in the face.
Brother in law used to run a couple of 18 footers, with something like a 10' beam, powered by a 500 hp Caddy V8 in charter service.
HTH,
Mark