I have a 2016 Craz with 1100's in rear (which actually fill to probably between 900-1000) and center and bow. I fill all to overflowing, speed at 10.5, put wakeplate all the way up and surf tab on 35% for me to surf. I weigh 275 lbs. and have a Phase 5 Trident. I can surf ropeless all day long with only my wife and 11 year-old son in boat. With surf tab and wakeplate settings I use, the wave is very steep, but has push that will put me in the boat. I can surf probably 10 feet back or so like this. When I let my 11 year-old surf, I change surf tab to 70% and speed up to about 11-11.2 mph and put wakeplate all the way down. He has a Phase 5 Scamp and can probably surf 20 feet back! I was confused when I first bought boat about surf tabs. Lower percentage means steeper wave with more push but you can't surf as far back.