A while back there was discussion of flush attachment hardware for flush deck hatches. DZUS fasteners were discussed, also I think Cam-Lock fasteners. I know that there used to be a whole host of such products for the sheet-metal (aircraft and others) trades. Does anyone know where to buy the onesies and twosies needed for a kayak?

I suggested to CLC that they stock them as part of an upgrade option for flush mount hatches, and they were not impressed.