All,
Maybe I seem to be too picky..but I have to say that the 292 with 6.2s just seems to be pretty tempermental with props. I have 28p Bravo 1s that have been labbed by merc(stock from Formula) and with the exception of polishing and vent holes they are stock. My concern is that while I do not have a lot of time in the boat in a lot of different conditions, it seems that there is a lot of slip...and top end is not so good.

Here is a quick summary of the speeds and RPM with tabs and drives neutral(parallel with hull). Boat was also full of fuel, water, and two people on board.
4000 rpm. 45mpg...all gps mph
4200rpm. 48 mph
4600rpm. 53 mph
4900rpm. 58.5 mph

with the drive optimized for speed, and the tabs all the way up and out of the way with the full fuel and water load, I saw 64mpg at 5100rmp

Now...with the load of water and fuel lightened, this would take out 1100 pounds...but I am not sure if this would simply get me to the rev limiter quicker. Honestly, I can bounce the rev limiters very easily if you start to trim up a little....not a lot.

Should I be patient and get a lighter load and run again? Seems like a lot of RMP to hold even the midrange speed...like there is a lot of slip.

Any recommendations from people with this boat and power? I think I may need to do something with the props...but am not sure.

PS...I have contacted Brett at BBlades, and he thinks he would need to look at the props. Of course he could tune them...just want to know if my expectations are higher than what the boat should/can deliver.

Thanks!!

You have the props vented? I would not run any vent holes they add slip on purpose.

How high are you trimming the drives? Other owners can tell you the best setting for top speed.

64 with full fuel and water and how much other gear may be a tad low but not terrible. We just need to get your slip down a bit

Also, do you have KPlanes or smaller tabs? You do not want to run them "all the way up" at high speed, you want them neutral with the hull or slightly up so they help keep the boat stable but do not scrub speed

I would get your props checked. I have an 04 with 6.2's running box stock 28's and see 5000-5100 rpm at 73 gps with 1/2 tank of fuel and 4 people.

THEY ARE A PIG OUT OF HOLE.

I don't even bother with the tabs I think it hurts more than helps. It is just the only real penalty for having small blocks and lacking low end torque of a big block.

Roll the throttles up and let her get over the hump. It doesn't need a ton of trim.

And the best and by far cheapest upgrade was ditching those 3/4 inch high arrestors. I picked up 2 mph gps with back to back runs.

I have 3 inch tall now it just took a little fabing

The 28s would blow out every time getting on plane. It was a constant finesse job with the throttles before they would bite. I made the decision since I come off and on plane more than going full throttle, that I'd give 26P bravo's a go. I'm finally about to put my 28s up for sale cause I won't go back. The 26s grab moment I hit the throttles. I lost maybe 1mph on cruise, its really not noticeable unless your watching your speed, and I believe probably 2mph on the top end going to the 26s, I really don't know cause I haven't really tested them wide open.

That slip does seem excessive. Here are my numbers from several years ago running labbed 28" pitch Bravo 1's as is from Formula. These do not have the vent holes.

The slip numbers were me running by myself with 1/2 tank of fuel. The all time best top speed was with perfect water conditions and a big tail wind.

I would get some of these plugs and see if closing off those vent holes significantly reduces slip. I believe they will fit your props. Brett at BBlades will know. Good luck Kai! You will be much happier with how the boat runs once you get the slip reduced.

http://bblades.com/product-category/...es/vent-plugs/

Split - You may want to consider getting those 28's worked on. Mine do not blow out and pull smoothly on plane. That is with the tabs all the way up.

Can anyone let me know the best trim angle for this hull? Should it simply be neutral/parallel to the hull, or up a little for best performance? I am wondering if over trimming could be an issue.

Also, I will get some plugs and see if there is an impact in top speed....thanks Dave.