Quote Originally Posted by kaneboats View Post
Absolutely, for two reasons. First, you want to get that pilot hole in exactly the right spot and it's way easier with the small bit. Second, you can carefully go through the gel coat with the progressively larger bits, being careful not to allow any chipping. Good luck!
Mike G,

Below is a link of my install that I think you will find helpful. Definitely remove the tower and drill from the topside as everyone else has said. Besides being better for the gelcoat, it will be much easier to run the speaker cable thru the tower leg with it removed. I made the mistake of not drilling a big enough hole (was only installing two speakers at the time) so I am going to have to go through this again since I've added two more tower speakers. I would suggest drilling a small pilot hole, then one size in the middle, then the final size. Use a sharp bit and drill in reverse. Most people say to drill in reverse until u get thru the gelcoat, then drill in forward. But I just drill in reverse all the way thru just to be safe since it doesn't take that long.

Hope that helps.

Al

https://forum.moomba.com/showthread....peaker+install