There are a million and a half posts on Glass Frit. I am a grip tape guy- call me old-school.
Once your frit wears down (if it does) … How do you best prep your board for grip tape?
I’ve got an old (~2007) Loaded Vanguard, and the stock frit is absolutely useless, but still enough of a pain in the ass to not want to just plop the griptape on-top of it. Sand paper?