OP I’ve been down this road with installing access hatches, spot lights, led strip lights, USB charging ports, 12 volt charging ports, ect. and never used any of it more than once. The LED strip lights were the biggest pain. After doing all of this I said if I ever want lights again I will mount lights with built in batteries on a gear track. My biggest regret was creating another way for water to get in the hull when I installed the access hatches. Most hatches are not waterproof if submerged. You can get some really bright LED head lamps nowadays that work great. Stanley makes a hand held battery powered spot light that is bright and lasts for hours.