You'd be fine with 2 mags.
Good to know. I saw on the website that the mininmum was 3, and that 5 was recommended. I guess that was for pins, and not pinheads.
Pin heads and full size pins shot with a major caliber (.40 S/W and larger) are 28' from the front edge of the shooters box. Pins are 29' feet away when shooting a minor caliber (9mm & .38 SPL).
Thanks.