Re: I've seen the light ...
Just to follow up, I still haven't gotten budget to buy any new lights, but we got some Source Fours donated by a local theater for one show. Then while at the lighting store I saw a couple dusty, cobweb-infested top hats for my PAR64s and figured it was destiny. They helped immensely for another show; I was surprised. I also got some 8" heater ducting and made a couple top hats. I experimented with different lengths, and in some cases they actually made things worse before they were painted black on the inside.
Just to follow up, I still haven't gotten budget to buy any new lights, but we got some Source Fours donated by a local theater for one show. Then while at the lighting store I saw a couple dusty, cobweb-infested top hats for my PAR64s and figured it was destiny. They helped immensely for another show; I was surprised. I also got some 8" heater ducting and made a couple top hats. I experimented with different lengths, and in some cases they actually made things worse before they were painted black on the inside.