I have 35 WA with 300 Suzukis and with full fuel ready to fish, I never have seen 1.5. Typically I run 4k at 32 mph at 1.45mpg. At 4400 I am at 1.33 and crusing at 36. Half load suprisingly at 4000 I am the same but at 4400 I am at 1.45 at 37. Spent a load of time tweaking the throtles on wat to Abaco this summer and sweet spot is somewhere within. I top out at 54. The 356 is a larger animal, higher freeboard, much larger than mine. A dear friend has one with 300 V's just repowered, hes a "bit" less efficent than I am. Love my boat: Cabin is too small to be comfy other than a true overnight, v berth needs the filler, and that hinders floor space. i have done it, on hook and ashore, overall, there are larger better laid out 35's for cabin space. Now with that said, I fly by and burn substantially less fuel with less motor than those larger cabin battle wagons. I dive and fish, recently mostly cruise to doing so, I dont truly need the "hole", have it, like it, but was not a deciding factor for me. Chris, you know where I'm at swing by i'll show you real #'s and feel anytime. The best paet of Intrepid, is customer service. ANY PART breaks, ANY REASON, they hand over a new one no questions asked! Love the 31 Jupiter FS, neighbor has one, my favorite CC. Hate that the deck drains to the bilge, very wet, I had that with my Whitewater. Ride is amazing. I need seating and shade. My days of fishing 8 rods are long behind me.