Guys, I have been so busy this last year I haven't had a lot of time to participate in these discussions like i would like to. But I had to give an old seaman's out look on this subject......Every object in water moves in six directions being----surge , sway , yaw , pitch , roll , and heave. It does not mater what the object is, a stick , battle ship or crank bait . With that being said we can only control three of them.That being surge,(fore and aft movement) sway (side to side) and yaw (rotating on an axis so that the head moves in opposite direction of the tail). Without getting to deep into stability these three movements that we can control are done so by changing the (VCG) vertical center of gravity,by moving weight up and down. (LCG) longitudinal center of gravity, by moving weight fore and aft . (TCG) transverse center of gravity. by moving weight port and strb. How far to move and the direction of the weight all depends on (COB) center of bouncy, pressure from water pushing up on the object due the displacement of the object. On board we do a stability calculation each time we load and right before we sail and it have to be dead on. Just think of the baits we all have built with too much weight in the wrong place it doesn't run right or may even roll over. That kind of mistakes on board can sink a ship. Hope I didn't confuse any one. Feel free to ask questions and I'll do my best to explain.
BOB