QuarterAcre, This URL has some hinging ideas that you probably know about already. https://www.dockbuilders.com/wooden-gangway-hardware.htm

I went with T-comF and T-comM connected with ConPinS where the ramp connects to the shore braces and the ramp connects to the main 12x12 dock.

1 ac pond LMB, BG, RES, CC