[mjfern]

I would suggest that asking a mentor to sign an NDA is inappropriate. You are already asking the mentor to do you a significant favor by providing ongoing advice and guidance. To then ask a mentor to sign a legal document is placing an unfair burden on the mentor.

The two solutions are to either (a) find a mentor you can trust with confidential information or (b) keep your "secret sauce" information private until you have created others barriers to entry.

[frankwong]

Thank you for your thoughts. Definitely holding back the secret sauce is a good idea. Also, I am fairly far along in the project development which I hope the momentum will create at least a small barrier.

[petervandijck]

Your secret sauce is probably less secret and less saucy than you think :)