I used the white reflective tape on the slide outs, marking the bottom corners (front and rear) with an "L". You can buy pre-cut tape at WalMart. I think they are 1"x4" and come two red and two white to a package. I also did this on the rear of the trailer but went to the bigger DOT tape you see on the 18 wheelers. Makes a HUGE difference in visibility and ... no drilling!
I don't have a website, but here's a couple of photos of the rig. It was a Renegade (also from Elkhart) based on a Freightliner Columbia chassis with a 450hp Mercedes-Benz diesel and 7 spd automatic transmission.
The trailer was 42' long. Double decked with a liftgate to raise/lower the cars carried on the upper deck. Downstairs I carried a Kawasaki Mule, a rack for race tires, a air compressor for air tools and a 125cc 4-wheeler in the back end. In the front end downstairs there were cabinets for tools, a spare engine, transmission, oil, spare parts, pop up tents, diagnostic equipment, welder, cutting torch and all the radios, race gear (helmets, suits, shoes, gloves, HANS devices, etc), and a thousand and one misc things. There was an observation deck on top with a fold-down railing. The trailer was airconditioned and heated (the plastic slide curtains sealed off the non-essential parts of the trailer for this purpose) and had its own 12KW diesel generator. The toterhome also had a 12KW diesel generator and I carried a 10KW gas generator as a backup. LOTS of electricity! The trailer was plumbed for air, so I could hook up the aircompressor and have 2 internal and 3 external quick-connect outlets. We also carried 3 nitrogen bottles for the racetires and to run airtools in the pits. There was also one acetylene and one oxygen bottle for the cutting torch. The welder was a TIG/MIG electric unit.
Pictures, left to right:
Trailer; double doors, four 500 Watt halogen floodlights
Trailer: lift gate for the cars, observation platform/railing on the roof
Trailer; bottom floor from back looking forward towards cabinets and work area
Trailer: upperdeck where cars were carried
Trailer; bottom deck at very back looking forward; this is where the Mule, 4 wheeler, etc were carried