^ nice tool box! I'm a well known Snap-on snob
I do like the idea you used to install a nut plate bracket inside the rocker..
definitely better to reinforce the host material and spread weight over broader area..
I like those steps, might even support my husky frame LoL
where blind holes are required and no internal access is available, rivnuts can be good solution..
and in areas where appearance quality counts, they're clean looking when installed properly..
here's the rivnut kit I put together for myself in a small tackle box.. handy tool for sure..
these aren't the best examples, but does show the importance of choosing proper grip length..
