I am an NRA Certified RSO and volunteer as such at Braintree R&P. So I'll offer some insight.
- The RSO program at BR&P apparently existed for very many years from what I've been told, but it was relatively informal.
- A number of bullets hit a commercial building some ~700 yds from the pistol range firing line and BR&P closed all outdoor ranges to investigate and make improvements. This occurred ~5-6 years ago. NRA range experts investigated and determined that the bullets didn't come from the club's ranges but were likely fired from a wooded area near the MBTA right-of-way . . . if they were on BR&P property it was as trespassers from the bordering property line. The NRA range expert report stated that the club should NOT allow outdoor shooting without ROs on duty, thus the club committed to the building owner and Braintree PD that we would only allow outdoor shooting with ROs on duty. Subsequently I volunteered . . . many bitched about the requirement, but a few of us decided to help out to make sure that the ranges stay open. I don't know the numbers but there were probably 30-40 active (and some number of "stand-by") ROs. Most of us were not NRA Certified RSOs, but a handful were.
- The club ran an NRA Certified RSO course so we could get NRA Certified as such. I took it, it was the most boring day I've ever spent at a gun club in my life. Other than pushing SOPs (mostly common sense stuff, first aid kits, someone call 911 in an emergency, someone by road to direct an ambulance, etc.) there really wasn't much "meat" for volunteering at a social gun club. It is mostly geared to commercial gun ranges where they rent guns/sell ammo/rent range time. [NOTE: If you take this course, take it from Jon Green . . . he makes it interesting by spending significant time evaluating each range at a club that hosts it . . . this is material that is NOT part of the NRA course, but makes it interesting and a good learning experience.]
- BR&P policy is that EVERY member is an RO when on the property and should observe/take action if it can be done safely if they see something unsafe or if an incident happens. I was a club RO for probably 3-4 years before taking the NRA Certified RSO course. Do I feel that I'm a better RSO due to being NRA Certified? NO!! Most of it is common sense and I do not think that the NRA course is all that great and could be greatly improved.
- Most clubs only use RSOs for events, not for every day activity, so there isn't a need to have massive numbers of Certified RSOs. The course cost BR&P a significant amount of money (the club paid for our course, we only paid to be NRA Certified) and most clubs can't/won't pay for that and thus requiring volunteers to get certified at their own expense (~$80-100) isn't reasonable. Thus you don't get a ton of NRA Certified volunteers.
- Since BR&P requires an RO to be on duty at all times when the outdoor ranges are open, we have more ROs than an average club to cover those shifts. Even so, I would guess that we only have about 40 active RSOs and we have ~3300 members (but only 500/year use the club facilities according to the card-key system). Unless you feel a need for one RSO to stand over the shoulders of every 1-2 shooters, all you should need for non-events is 1-2 at the club at any one time.