I have an anvil I usually use, but sometimes working on the bench is not practical. I am upgrading/modifying the dodger on my BBSB this summer, and will be installing snaps to match some existing snaps. I like to install one at a time and ensure that everything aligns and is snug. The use of the hand tool will be needed this time. If you have one that I might borrow, or rent, or buy, please let me know. No hurry, it will be in June/July likely when I can schedule a weekend with Mom, my canvas maker!
https://www.sailrite.com/Pres-N-Snap-Fastener-Tool
https://www.sailrite.com/Pres-N-Snap-Fastener-Tool