FYI, Hobie does make a kit to adapt the Sidekick bar clamps to the existing inserts that are there for the Adventure Island kit upgrade. The kit consists of two aluminum bars with predrilled & threaded holes & 8 screws. I've installed the kit on my Adventure & it's very strong. I can lift the kayak with the bar & don't have to worry about wellnuts pulling out. Not sure if all Adventures came with the AI threaded inserts but thought I'd post in case you have them.
Good to know. My adventure is one of the first to come out so I doubt is has those existing inserts. Kind of weird I only noticed now after owning it for years that there are some holes "filled" right by where I installed the sidekicks. I bought it new the repairs blend in perfectly with the existing plastic.