GOOD NEWS. . . . The PICTURE UPLOAD FUNCTION IS WORKING !!! The tech folks at the parent company have been able to remedy the issue. You can upload pictures once again. Thank you for your patience.
I attached a the Canon mounting plate to a Scotty swivel base at less than half the price of Canon, I seem to remember they were $24.99 each. It may have added two additional inches of height but worked great for the 10 plus years I had the setup. I also refused to buy the $89 Canon bases.
Hey WH, might want to look into Riviera's swivel base specs to see if its going to adapt to the Cannons.. I don't remember if it will w/o a little fabrication.