Old post but I'll bite. I'm pushing 30/31mph with a 2005 40hp Merc. 4 Stroke and EFI. Thats with no gear and 1 person in the boat. floats high and dry like a corkHi, everyone! I have a HPS that I plan on repowering very soon. I was wondering what you would recommend for an outboard. I plan on getting a Yamaha 4 stroke outboard, but I’m trying to decide between the 50 hp, 60 hp, or 70 hp. Thanks!