Installing hull lights?
 

It's winter here in wonderful Wisconsin. My boat is stored away, but
I'm dreaming of the day when the ice melts and I can get back out and
do some boating. I fish at night quite a bit and would like to
install some hull lights to make nighttime docking easier. I have
never made any electrical modifications to my boat and am not that
familiar with the realm of 12V modifications. I'm just looking for
some tips on where to get some information (a good site perhaps) and
how I can determine what the maximum ability of my electrical system
would be. I have a 18' Four Winns Fish n' Ski that has two batteries.
We also take the boat out for the July 4th party on the lake. Lots
of people light up their boats and I'd also need to consider
electrical capacity for that. Also, after looking through the
Overtons catalog I'm wondering how I can be sure that the angle on the
hull lights would be suitable for the hull of my boat. Are they
pretty much universal? Any recommendations on a durable brand?
Thanks for any help!