Ok so your using a hydraulic plate to help your holeshot and midrange, BUT the more setback you have the worse the holeshot, worse midrange and the worse backwash you have because of the extra setback and extra weight of the hydraulic plate...plus a Sportmaster has a worse holeshot than a Torquemaster gearcase because there is more surface area which creates drag. The see-saw theory doesn't work in this case because you haven't changed the fulcrum point of the see-saw you only moved the 300 lbs guy futher back which gave him more leverage but it didn't change the fulcrum point on the see-saw. If you don't change the fulcrum point you will still have drag. Just because you have more bow lift doesn't aways mean you have moved the fulcrum point back, but if your making the boat longer with more setback the prop is having a harder and hard time lifting up the LONGER boat. When your boat was porpoising its was one of or a combination of motor heigh, prop, water conditions, too much setback or trim angle. I've never heard of a boat porpoising due to too little setback. You will never run at neutral trim angle on a standard weight 21'10" Bullet. If you had a 21'10" Bullet that weighed 1200 lbs and a 20' Bullet that weighed 1200 lbs the 21'er will always be slower due to the spanded weight. If you have two 2x4's that weigh the same but one is 5' long and the other is 6'long and you try to pick them up at their ends the one that is 6' long is harder to pickup. The prop is what is having a hard time picking up the longer boat. Anytime you help one thing you hurt something else. The negatives of the Sportmaster on a 21'10" Bullet /250 hp out weigh the positives in my opinion. With a TRUE fishing load you may be 1-2 mph faster on topend, but a boat with the same motor, the same load and a Torquemaster will get you on holeshot and midrange and it would take you many miles for you to ever pass the boat with the Torquemaster that is 2 mph slower. I ran several jackplates on a 21xd/300 Promax with a true fishing load in 1998...14" was the best all round. I also ran a 21xd/280 ( Robbie Mayton's boat before he bought it) with a 14" plate to 93 mph and I only tried 2 props (trophy and tempest)to get there. A 280 motor as far as speed is right there with a 250...I've been faster with two people and a load with a 250 hp than I have with a 280 hp and a load. Also there is 8-10 mph difference between a Bullet setup for topend with a topend prop and the motor at Max height and the same Bullet with a TRUE fishing load and a good prop and the motor set a fishing height.