Pumping out a flat bilge
Problem is Allen that there really is no bilge. The sole is laminated to the hull. Theoretically there is a tiny space between them (where its delaminated), but nothing even close to pump-inlet or strainer depth. Wish I could post a pic, the issues would be obvious then.
We cut in a 4" inspection point in the sole at its lowest point (right in front of the daggerboard pocket), so the lip of that inspection plate offers -- again theoretically -- a 1/4" depth in which to collect water. But its too small to fit a pump and switch; and the switch still needs a 2" rise to activate.
And the idea of an automatic swicth is attractive at first; until you consider the wasted amps it uses to turn on every 15 mins "just in case" there is water collected.
Right now was are trying a somewhat "duct tape" solution. We''ve built a small damn of sponges in a circle around the collection point and placed the pump & switch assembly inside that ring. Kinda like an oil boom around an oil slick or something (smile).
While not a rational nor professional solution to the problem it might do the trick as a remedy for this season.