Here is a picture of RABUDS installed on a boat in the gallery (little scupper next to the bracket) these look to me to be installed to high and above the deckline, which would not drain. They are basically a scupper with a ball stop to eliminate any backflow in installations like my V-20 where the transom water line will dip when not under way with weight, swell etc. I understand the load issues and marking, was hopeful that someone else has dealt with this and has some tips learned through their experience. In my area we take a lot of water spray while under way. I do not like the that the deck does not self bail. Want to fix that.