Several members of the dulcimer group of which I am a part have asked me to build them a possum board.
I have made several for myself typically making them custom fit to each dulcimore.
I'd like to streamline the process if I can. Anyone have an idea of how to make a universal one? Seems there should be a way to make either a tail or head anchor point that is adjustable and secure no matter which dulcimore is being used. I have seen a couple which are supposed to be universal but the dulcimore seemed to slop around on the board rather than remaining secure. I normally use strap buttons at each end of the possum boards I make and use a small black rubber band (those used for hair braids from WalMart or Sally's Beauty) to attach the dulcimore to the possum board. Then there is still room to use a strap if you normally do so.
You could put a full length 1/4 inch slot in the board coming to an inch or so of the ends and embed t-nuts in the riser blocks. That way you could slide the blocks from end to end if needed.
I think I like this idea! Really, do you need more than say 10 inches of adjustment? I'm thinking on the peg head end so the tail piece can be full width and receive the feet....the peg end can be quite narrow to catch the forward foot. Yes elastic type anchors on each end.