I'm with dyditty, Paul. Plus, if you are going to use a thumb pick then your fingers are going to have to work harder to stay in the mix, and next thing you know you're going to have a worse problem: Picker's Elbow, which takes months to heal and sometimes several shots of cortizone. Just take some clippers and cut the thimb nail back and use the side of the thumb and in no time you'll have a nice callus built up there and you'll look back at this little inconvience as a blessing.