For those of you like @awesomewash2 who might be mechanically declined, here are detailed photos lol. The skid came with rubber mounts bolted to it already, with washers and nylock lock nuts. They are 3/8-16 thread, so I got 3/8-16 x 4" carriage bolts. Carriage bolts because the holes in the skid are square (surprised me when I unbolted it and found out, but it’s quite convenient actually). I drilled a 3/8" hole through the skid holes where I wanted the machine. The bolted it together. The nuts are 9/16", and you need a long socket or wrench. A short socket won’t work if you’re using a ratchet. Also, get a Milwaukee impact tool.
I would have mounted the skid over closer to the rail, but I couldn’t do that because of the tongue A frame underneath, as seen in the underside photos. I tried to get it as close as possible though. I think it looks nice. Still waiting for someone to help me weld the angle iron to build the support for the back of the hose reels. Hopefully soon though. United Hoses pressure hoses should arrive today, but I’ll be out of town for a family Christmas thing. I’ll get photos up Monday probably when I get to work on it a bit more.