Thanks, Gin.
If you're looking to do reading or research, there are certainly other filmmakers who came up in the indie world like Robert Rodriguez who have written books and taught seminars for this sort of thing. In terms of interaction, I'm not sure the best way to advise. This site is a good place to start and I've also heard Raindance is good.

Best of luck to you!

Thanks, Michael.

That's a tough one. Generally, the impact of an arrow alone tends to deliver in spades. The only way I could see a Zerk hit working is if it was hitting some kind of metal surface (shield?), but you'd still need to see the arrow land. If you are using CG arrows for the hits, maybe you could combine it with a Zerk, but I think you might be better off trying to find practical ways to focus on just the arrow. Don't want to over complicate it.

Just some food for thought.

@WalterBrokx, thanks! And a little sarcasm never hurts, right?

Hey Jake,
Are you referring to on set medics, or my mention of ETF?
When firing blanks or using any explosive based special effect, you will always require some form of law enforcement to be present. The rates can vary based on city, state, province etc. The shoot days will be entirely up to your production schedule. For Gridlocked, I'd estimate that we had them there for 6 or 7 days.

As for medics, they usually show up for some of the more intense rehearsals, and are also present for your shoot days that require stunt doubles and actors partaking in scenes that require a lot of physicality or weapons. We had them there more than we did ETF.

Hope that helps.