I appreciate all the replies and good tips here guys. Given the ongoing discussion regarding my primary purpose of waterproofing vs. briar proofing, has anybody here had success using any of the various sprays such as CampDry, etc? I once sprayed and entire can on a simple cotton upland vest and did endure a few drizzles but nothing of any significance for a actual verification of my waterproofing technique. My greatest concern about doing this myself, either re-proofing or starting new like Stan did is consistency of thickness of the painted on material.