Hey Bill and welcome to the Forums here… Glad to have you…!!
As a matter of fact, this very thought has been brought up a few times before… It sounds to me like some guys are doing just what you propose in your question above… Here’s a couple of links that will take you to a little more information…
If you do a search on the forum here for the word “Sharpie”, you’ll find a little more than what I’ve listed here…
I’d give Youtube a go at this subject as well… You never know what you can find there!