When hooking up a trailer, instead of connecting the trailer's safety chains directly to the hook in front of it on the vehicle, cross them. Put the chain from the right side of the tongue to the hook on the left side of the hitch. Likewise, put the other chain onto the hook on the right side of the hitch. That way, should the trailer come unhitched, the tongue and coupler will land on the crossed chains instead of skidding on the road.
Brightening up your workplace will make work easier and cut down on mistakes and mishaps. To free your benchwork of glare and shadows use two 48-in. tubes in a utility fluorescent fixture, centered over the front edge of your workbench, 48 in. above the work area. For extra light to see details, consider portable halogen worklights. Tripods for these lights makes it easy to put light where you need it. Also consider clamping lamps with a 50-watt reflector bulb near task areas like vises and drill presses.