Seems as if the boat/motor are preforming as advertised. What the OP wants to do is make it do something else. I'm thinking the net affect of moving the batteries will not justify what is required to to move 'em. Try smoothly increasing power as high as required, then smoothly backing it off when you get where you want to run. Or, put the tabs where where you will cruise, then power through the hole until you get there. It's a boat, if your passengers want a limo ride, well, you know ...
