I've never used them and I've built a couple permanent stands that have made it close to a decade on locations that are pounded with wind. They look really convenient, but I doubt that the stands with those braces can take significantly higher wind loads than a standard design that copies the standard deck design (sunk 6x6's or 4x4's attached with stainless steel bolts and washers attached to 2x12"'s with a deck built on the 2x12's). The braces do add strength to the weak link and makes that area stronger, but it just moves the weakest link to a different point which is still wood. Kind of like using a 100 pound steel leader on the end of 8 point test mono.
I've spent $100 on far worse things, but it would probably take some convincing to make me a believer in these. That said, the stands shown in the pictures look really nice and I certainly can't say anything bad about them other than I'm probably too cheap to buy the supports.
I've spent $100 on far worse things, but it would probably take some convincing to make me a believer in these. That said, the stands shown in the pictures look really nice and I certainly can't say anything bad about them other than I'm probably too cheap to buy the supports.