Felltower Rules Questions: Rapid Throwing & Throwing Art

Two rules questions came up.

Rapid Throwing

We're not using the handfull of missiles Rapid Fire with Thrown Weapons rules from GURPS Martial Arts, p. 120.

We do allow the rules under Rapid Strike with Thrown Weapons . . . sort of. You can use a Rapid Strike with the usual penalties, but not Fast-Draw or otherwise ready a weapon in the middle. So you can't thrown, draw, throw unless you have Extra Attack.

You could carry two thrown weapons, one in each hand, and throw both. Or carry multiple smaller weapons in one hand and throw them as a Rapid Strike.

I don't have anything against the rules in my book, I just don't want to deal with the complexity for this game.

Throwing sling bullets?

Can you throw sling bullets with Throwing Art? Yes. It's basically a metal pebble of the specified weight, and is thrown as such. They do thr+1, as a small stone would, piercing because Throwing Art makes that kinda make sense for a metal bullet (remember, we do crush for stones with slings, not piercing, because GURPS got that wrong IMO.) Range is STx2.5, per Exploits, p. 22.