Re demolished the camper bathroom. Didn't like how it was after rebuilding it the first time. Floor was gone, so I bolted some angle iron to the frame rails, and used em as cradles for pressure treated 2x4's which I screwed the luan subfloor sheets to.
When standing in front of the toilet there was still so much flex it was like standing in a canoe. Er.. maybe not that bad, a 48" jon boat.
Tore it all out, welded the steel instead of bolts and welded the angle iron to each other to make a true channel and said F it all and used 3/4" marine plywood as the new floor. **** don't move a bit.
Put down new self adhesive vinyl flooring. Used up 36 sq ft. Probably need about 30 more. But I'm back to work tomorrow. Then camping for a week after, then back to work, then to Georgia for racecar things, then back to work, then it's cold out.... so probably as far as I'm getting this year