18 foot tunnel and 25 suzuki

[Roy123]

I found a nice used rig I am considering buying. Its a 1844 weldbilt tunnel with a 25 3 cylinder suzuki. The majority of the 18foot tunnels in my marsh have 40hp motors and scoot along pretty well. have any of you guys run a 25 on an 18 foor tunnel? My grandfather has a 25 suzuki on a 1542 tunnel, so I know it is a very powerful for a 25. It will carry a 3 man load in the low 20's if I had to guess. By myself I bump 30 I would think. Will the larger 18 foot boat carry 3 big guys and gear during hunting season? What kind of speeds would be expected with a one man fishing load, or loaded down heavy during duck season?