Better performance - 18x42 or 18x48 tunnel hull?

[scott craft]

Originally Posted by Bad Boy

I have a 18' x 42" Southfork Tunnel with a 2 Stroke 60 Merc and a 15 pitch 4 Blade Power Tech on it. I am still in the process of getting the bugs worked out of it but I can only get 31 mph out of it. I need to get my power trim working and it feels like the 15 pitch is to much for it. My question is how are these guys with the same hull and less HP running 40 & 43 mph? I would like to see at least 40 mph am I asking to much are these tunnels that slow?

CajunChristian could help you with your prop and setup. You should probably get more out of it than what you're getting. I would take with a grain of salt anyone saying they are running 40-43 on a tunnel with a stock 40.