I am going to install a wash-down pump on my boat. My question is about the pick-up. Do most people install it on the transom near the bottom? I'm kind of nervous about any kind of hole to the outside that could let water in if it failed. I thought about making an arrangement to pump out of a bucket but this seems kind or "dorky". Well fellow i-fishers, what is your system like, can you give me some confidence in drilling through my aluminum?