“Undroppable” banjo pick
I’ve been playing tenor banjo for 30+ years but have recently experienced difficulties in holding a pick. I can finger-pick efficiently enough (legacy of classical guitar training) at moderate speeds, but banjo’s metal strings tear heck out of plucking finger-tips. Once upon a time I had come across a procedure for using surgical tubing fitted over the right hand index finger to serve as an "undroppable" pick (procedure used by [e.g.] Johnny Keenan and Tony Sullivan) but I don’t remember the details. Questions: do any banjo players out there  recall the procedure for creating such a rig  actually use it?