I run with the flow all the way down. Honestly i haven't had a bunch of time for testing this year, when i get the opportunity to go i go!! But i would think that the deeper you sink the boat you might have to move up a setting. Some guys have got the 900's for the rear lockers and they will fit but it sounds like they bow the walls a little which i don't like... one other thing is i would check and maybe run the new axis nose bag as it has wider legs and there is def. more room than what the 650 ibs bag is using right now. Wakemakers has several different nose bags now