Anyone have a home made ( DIY ) Chock / tie-down system?

I use the factory mounting rings in the trailer, rubber mats and Harbor Freight locking chocks. I can place the chock and mat where ever I want depending on what I am carrying and how much room I have. I wrap two ratchet straps (front and rear) around the chocks.

I use Canyon Dancer to strap the handle bars and tie down the rear of the bike on the passenger pegs. I have hauled two bikes at a time with the method. No permanent mounts or additional holes in the floor. Full flexibility where I arrange the bikes.