Glad you were not hurt.
You do know that if you crank up your trailer tongue higher, you can get those weight distribution bars on without using any tools at all. I've had a Reese (with the bars and chains and the lift that raise up and down with a cheater bar), and also now an Equal-i-zer, where the bars rest on an L-bracket. I've never had to use the cheater bars. Just crank the tongue up high enough and you'll be able to slip the bars on (or the chains on), or the lifts on, without any tools. When you lower the tongue, you'll get the tension on those bars.
If you can't raise your trailer tongue high enough, but a block under the tongue jack so it will raise higher. I keep a 6 inch block under mine all the time so the trailer tongue will lift higher. Been doing this with 3 different trailers now.