How is the "Hole Shot" on this boat? From what I read in the posts, it appears to me to be over propped and may also be a tach issue. This boat is a 28 footer at 7500 pounds with a single 5.0 pushing a 1.95 out drive with D4 props, Would expect D1 or D2s on this. 35 mph isn't bad for a boat of this size and weight on a single 5.0. If it's able to get up on plane and doesn't struggle, I would look at the back of your tach and see that it's set for a V-8. There's an adjustment screw to set for a 4 cyl, 6 cyl, then 8. Won't read correctly if it's not right. D4 to me is big prop for that boat and the 1.95 outdrive. Would seem more likely on the 2.30 DPS.
I'll check on the tach. I can't really tell you about the hole shot as I can't really shoot it up to full throttle. 3600 rpms that's when it gets on plane and properly trimmed. I'd say sluggish to say the least but I have nothing to compare it to. As far as the props are concerned they are the original props. That motor and drive were professionally installed in the hull. Used boat but brand new motor. I seriously doubt that the po ran around for 432 hours with it missing 1000-1400 rpms and thought "good enough."
I do wish it had the 5.7 in it, but I also think there is a performance issue.
These hulls were mass produced and we're built for tuna fishing with for the religious cult "moonies" led by reverend moon. They are long and built heavy but are one of the first true deep v boats built. The boats were mostly equipped with 235 2 stroke outboards. I think the 5.0gi with the dp is comparable if not superior.
I will however check all suggestions! Like I said, I have nothing to compare it to and I'm learning along the way.
Thanks again