I used my table beyond recommended spec this weekend.....
Sounds like there's a high likelyhood that tequila is somehow involved in the making of this story.....
This thing? (photo)
I just drill a hole through the fitting and the tube and put in a thru-bolt. The table is fully secure-and no longer rotates annoyingly.
No need for quick-adjust fittings in that application unless converting to double berth.