Scuppers under the water line?

[Iriekiley]

Hey all, Im new to the forum and in the process of restoring a 20SF of the 1974 vintage. It this point the transom has been raised to 25" and i just had ping pong style scuppers installed into the deck where the old vertical scuppers were. I'm trying to decide on the best location for the new stainless thru hulls on the back? There is not much angle for water to self drain if i put them right on the water line...is it completely wrong to put them below water? My obvious main concern is that the boat will self bail at rest with nobody around..if it monsoons. Any ideas would be great! Thanks!