I agree. Threaded inserts in the floor with something to keep the crud out when not installed.4 recessed corner concrete anchors. Return the bolts in the floor when not needed so the holes don't fill with trash and dirt. Or maybe use some plastic automotive trim push type plugs so they are almost flush with the floor to fill holes when not in use.
Sounds like a better plan all around...So I’ve decided to go ahead and do the swag off road numatic ram mount. Then it doesn’t need to be mounted to the floor. It can be on wheels. https://www.swagoffroad.com/SWAG-Formed-Tubing-Bender-AirHydraulic-Ram-Mount_p_53.html
This Idea came to me in the night...Quick little drawing. This would be gobs of holding force i think. Might even be able to get by with just 2.
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You made the right decision.So I’ve decided to go ahead and do the swag off road numatic ram mount. Then it doesn’t need to be mounted to the floor. It can be on wheels. https://www.swagoffroad.com/SWAG-Formed-Tubing-Bender-AirHydraulic-Ram-Mount_p_53.html