Hmm, I would really recommend being a bit open towards adjusting your water start technique. I now many people use the tail like that, and I used to do it before o, but once you stop, its not a very big issue and you will get much more freedom both when choosing boards and trimming them. Moreover you will become much faster with your water starts (not needing to involve the board in the early stage of "sail lifting"). I've seen a few people obviously sailing with booms to low, the reason being they want to use the "tail trick" when water starting. Not the best argument to improve your sailing.
That said, if you want I can give you some numbers later, at least on the boards I currently have at home.