I understand that this should be done on tight as a drum fabric either on a deep hoop or a slate frame. I am not a great lover of hoops but I will give them a go

So a small 6" and a larger 10" hoop bound using 1" bias binding. By the time all that extra thickness has been added there is not much left on the hoop tightening screw. If necessary I will make a longer set of screws.
And in case I don't get on with them I picked up a home made slate frame the other day which now has a new set of 4 frame pins (and a spare)

The holes in the frame are tapered so the new set of pins are also tapered to match. This has the advantage that they will press in and hopefully stay there. In the heads of the pins are cross holes. I have yet to decide if these are for a secondary securing to the frame or just there to put a loop of thread through so that they can be held together with the frame.
It strikes me as very wide (18" of usable space) when much of Goldwork is rather smaller

Jo