Trene

I use one thimble on the middle finger of my top hand (for me that is my right hand). I do not use one on my under-hand, but my finger tip does get sore! I went through a lot of thimbles until I found one that works for me - my problem was that I was getting them too big! Luckily they are mostly inexpensive. I am learning new techniques for hand quilting (I learned to quilt as a child) and am finding that I have more control without a hoop, and as my rocking gets getter, I am poking my under finger less. I really like the Thimblelady videos - I don't do it exactly her way, but she has great ideas!
Good luck, hand quilting is wonderful, as is this Board for support!