What's the experience of the 400 HP in the SL? I am/was considering a SL 450 but have heard that a SL 400 with a torque prop (15 x 12) is totally sufficient even running fully balasted with an extra 1800lbs of weight added with a surfer and 2 in the boat. Propped like that apparently limits top speed under 36mph and I suppose not great on fuel economy (or maybe it is?) We typically boat at 30' above sea level but may move to someplace that is closer to 400' above sea level. The 450 would be nice but $6,500 for about 12% HP increase seems a bit much to me. (Unless you look at the $18K+ for the turbo charged 550.
Anyway I hope someone can give me some insights on this configuration.
Thx.