Re: How much weight can 4hp Push?
my lake neighbors used an old 4hp to push a smallish old school ~18' pontoon around for years. Often they'd have 5 or 6 guys, lawn chairs and a cooler or two on it and just tool around shore fishing as they went. It didn't set any speed records, but it certainly kept them moving at a few mph all day long... sounded like the motor was set at about 1/2 throttle. He's got a 10 hp on it now, but they still putt around at the same speed, probably need a bit less throttle to do it. It's just not worth the extra gas/noise to get an extra mph or two since they're mostly just fishing anyways.
Does you're have the weedless prop and tilted lower unit on it? It seems that those might get a bit less "bite" on the water than a standard one, so maybe that's an issue.
