I don't know about Palmers but Boston Whalers will self-bail at trolling speeds 100% and about 95% at rest. A controlled leaking system doesn't sound very safe to me especially in adverse conditions. Like the previous post- what if the battery dies or the pump decides to take a rest?

Good luck
_________________________
In the legend of King Arthur, the Fisher King was a renowned angler whose errant ways caused him to be struck dumb in the presence of the sacred chalice. I am no great fisherman, and a steelhead is not the covenant of Christ, but with each of these fish I am rendered speechless.