"John H" wrote in message
...

What I'm looking for is some type of ball and socket bracket that would
allow side to side motion without transmitting the stress to the screws.


I think you'd end up with a very floppy bimini.

The type of brackets you have allow the bimini to be lowered (folded up when
underway).
They are not supposed to hold it rigid. That's what the straps are for.

Eisboch