yep, since speed is the prerequisite, that means a timed event. and all offhand out of the pouch. patched balls. should ball boards be allowed? hmm.
i like that pie plate thing, rondo! it'd be easier and less complicated than a seneca run, just not as near-true-to-life thrilling a pie plate at 30 yards, 10 minutes of shooting, total number of holes in the plate wins. perhaps a thin 4" center ring to use for tie breakers. this also means that the firing line can accommodate 6 shooters at a time for a fast event that'd be over in an hour or less.
wonder what i can do to add in a mini 2 or 3 target seneca run with steel plates?
Quite honestly I've never used a ball-board, and never felt at a disadvantage when competing against those that do (during any timed-event). YMMV
The ol'X target works great as a simple "tie-breaker",.... 1 shot - closest to the center of the "X" - breaks the tie.
The "stake shoot" (already mentioned) can accommodate as many shooters as you have stakes. We used 1"x2" stakes, about 24" long driven about half-way into the ground. If there's the chance the ground in your area is "frozen", you'll also have to take that into consideration.
Also,... the "stake shoot" isn't an actual timed-event (per se), as shooters have to shoot until their individual stake is cut completely in two. The time length involved with this type of shoot depends on how many "places" (prizes) are pre-determined for the shoot. We always had 3 different valued prizes for 1st., 2nd., and 3rd. places. but could be increased if you have lots of shooters.
One of the nice things about this type of shoot, is the lack of actually having to "score" targets,.... when a shooter cuts his stake in two, he simply yells out and his name is written down.
Stake shoots can be shot with shooters putting money in a hat, then paid out to the top shooters in proportion to how they scored.
Shooting/muzzleloading clubs have used stake shoots with a portion of the "proceeds" going to the top 3 shooters (in proportion to how they scored),.... and a portion of the money going to the club,.... or used as compensation to whoever provided/made the wooden stakes.