you are asking if you should just drill some holes to drain the water out of where the water shouldnt be, rather than fixing the leak so the water cant get there????... the answer is no. fix the leak.
the holes in the liner prevent the bilge stink and moisture from rising from it into the boat, AND, it if the bilge does get an abundence of water into it before being pumped down, it will keep the inside of the cabin space dry....
I knowingly have a small leak at the rubrail on my 25. it leaks into the bilge.....I had it setting on the trailer in the yard uncovered, and after 4 months of winter rain, I had to go into the boat for something, and found that below the liner it was FULL of water, and was beginning to overflow out of the swing keel hole into the interior, and had about a half inch of standing water in the companionway/aisle.
if I would of had drain holes in the liner, the water would have been 6 inches deeper throughout. and would have gotten into the interior much earlier, and so would have been in the interior for a much longer time.... I pumped it all out and placed fans in the cabin, and escaped without any mold.mildew, rot or ruined gear....
im certain if the interior would have been exposed to the standing water for a longer period of time, the interior would have been trashed...
and in your case, if the leak it getting into the occupancy space of the boat, it needs to be fixed anyway.... there is no good reason to wait until after you drill the hole, but every reason to do it before....
but it IS your boat, so you can do it however YOU want to do it
