Rollcage installation with bedliner coated floors

[Guest bluex_v1]

I read in some older posts that it was suggested to weld roll cage feet plates to the floors so that it is just kind of stitched instead of putting a full bead along the entire perimeter...this to allow the unibody to flex just a little more so over time the mounting doesn't just sheer loose, taking that square of unibody with it. In regards to that suggestion:

-I'm planning to use Herculiner urethane bedliner on my floors, fenders, etc...would it be a good idea instead to bolt the rollcage feet plates through the floor to another plate on the underside tack welded to the unibody sheet metal, and where possible bolt it in the same manner through to the subframe and connectors (for instance, weld on some angle iron tabs coming off the frame rails for the bolts to come down through)? This way there would be a thin little damper between the cage and the unibody to help buffer the different rates of flex. I mainly want the rollcage in there for structural ridgity more than anything though, and I don't know if this mounting method would reduce that effect noticeably or maybe have other unintended consequences

[Guest Anonymous]

You have a good idea for removable parts but rather labor intensive for a permanent reinforcement considering all the uneven variations of the unibody that will need to be hand fitted. Stitch weld your feet to the sheet metal since you will have the opportunity on focusing the welding heat on the thicker metal to momentarily dip down on the sheet metal to make the weld.