Howdy rich59! I have used a device made with a rectangular pc. of leather aprox 1 1/2 inches by 3 inch with two thongs attached to each end.Each thong has loops for your thumbs to fit into.The leather(I use elk)cups over the spindle.Your thumbs through the loops provides down pressure while leaving the palms to spin the spindle.The length of the thongs depends on the length of the spindle stick and whats comfortable to you.Good luck
Hi Vector (and welcome as I see this is your first post