This has probably been asked or discussed here several times but for the sake of time, I'll ask my Allison brothers and see if you can give a good reason for why and how. Saturday I ran a new prop on my new Bassport. 29 Hydromotive Quad IV XOB. I had 4 of the 8 pvs holes plugged. The holes I had plugged were the forward or holes closest to the boat on the prop. This was the first time to run this prop with an absolute max load. There almost was no hole shot. RPM's at WOT was 2K. It was pitiful. After several long seconds (about 30 guessing) the rpm's slowly would rise and it would finally break over and get on plane. I pulled the boat out and removed all the plugs. After that the cavitation and spinout was so bad it was about as bad as before on hole shot only the RPM's was peaking up and down from 4K to 4,500K. I put it back on the trailer and put 2 plugs back in. The hole shot was better after putting 2 plugs in but it still spun out and did not want to break over well at all. I'm planning on adding a 3rd plug and after talking to Tim Powell I may carry a drill and drill a hole in one or more plugs to see what happens. Any thoughts or opinions based on fact, experience and not speculation? I've run Bravo 1's, Pro ET's, and my 27 Hydro and all did pretty well on hole shot, albeit no where near as loaded as now. Would moving the plugs to the back holes matter very much? I've run a lot of props over the years on my 3 Bassport's and never seen anything like this. But, I have been told the 300's don't have nearly as good a hole shot due to the exhaust gas porting difference.