@tone100. I won't be able to get a picture for another week as I'm not going to be near my boat. I'm now second guessing the location whether its similar to the floor drain that you see enter the bilge at the rear of the passenger area (towards the step) or whether its a smaller hole in the bottom of the locker floor pan. In either case, it is located there as each of the last three years, I've emptied and pressure washed the inside of the compartment.
My only concern with drilling back there is the back of the ski locker is right in front of the fuel tank which if you puncture, is a costly repair as you'd have to separate the top cap of the boat from the hull to repair/replace.
Can you easily check to see if there are any openings at the rear and if you're really fortunate, blow some compressed air through them?
The drain in my recollection is molded in the pan, so I don't think its a matter of a missed drill.
@tone100, you are correct. it's behind but in case you drill on an angle at the back, better safe than sorry. So you'll have to keep bailing for now I'll get you a pic of mine this weekend if I make it to the lake.
tone100....Here are the pics
In the front, you have two holes (one on each side) that would drain large amounts of water
<img src="http://s1346.photobucket.com/user/Nelson_Quirk/media/image_zps0f65b63b.jpeg.html?sort=3&o=0" />
In the rear, about 6 inches from the rear are two drilled holes about 1/2 inch wide for rear drainage
<img src="http://s1346.photobucket.com/user/Nelson_Quirk/media/photo_zps3df9b80a.jpg.html?sort=3&o=1" />