If Mike's opinion is worth 2 1/2 cents, then here is my penny version...
I purchased a remote control spotlight from West Marine that has a suction cup mount. I had the same problems with reflections when mounted on the pilothouse, so I finally worked out an arrangement where I attach it to the bow below the deck on the starboard side. I then run the power and remote control into the pilothouse through an open window or hatch and plug it in. You have to get used to the idea that the up and down functions are really left and right, etc. Once again, a very simplistic approach but it seems to work! I really like having the light closer to the water as it helps me see debri, etc. when underway at night. It's tricky getting the suction cup to mount properly, but once it's set, it stays put. I think I spent less than $70 on it as a closeout item.
Texas Steve