Anyone ever put cfl's in a sign to replace the ho lamps and ballasts. I have a sign that's 8 feet by 3 feet and it needs a new everything. I'm thinking of putting 3 rows of lights about 18 inches apart. WAG method at this point. 18 lamps and maybe use the 250 watt equivalent and a bunch of keyless. It'd be nice to get a premade something or the other like a work light string but I'd rather it be mounted solidly.