I've been reading the forums constantly for weeks and have a fairly decent understanding of the idea behind what makes a good throw light. But I think I might be missing something.
It seems that everyone who makes a very high powered searchlight does so with some type of custom setup that costs them zillions of dollars. Between the bulbs, ballasts, hosts, custom lenses, batteries, blah blah they spend a fortune.
I was searching around ebay for a while and came across some lights like these: http://www.ebay.com/itm/400-Watt-Met...item5886d8e23b
Is there any special reason why you couldn't modify something like this to be a throwing monster on the cheap? Or am I missing some large part of the puzzle?