I think I am in a similar situation as you, regarding the facility and the surrounding area. We are “semi remote”, and it is basically “cowboy country”, and those people don’t think that they need any “riding lessons”, or input of any kind because they know it all already. I am on old h/j type, and there are only a few interested in h/j. There are a few dressage types, and a few eventers. And some recreational riders, english or western. And some “cowboy sports” types, which are not interested in anything we offer.
I do offer clinics here, and “usually” they will fill enough to “go”. We need a minimum of 10 paying riders and a maximum of 20 or so, and I fit myself in with whatever horses I am riding, from greenies to competitive. I do the promotional stuff, and the scheduling of lessons to suit everyone. There is not a lot of spare money among most people in this area, so I have to look for a clinician with enough h/j to suit me and a few others with setting jumps and policing my equitation, and flexible enough to help recreational riders, some basic dressage (which everyone needs anyway), and relaxed enough to take riders who are green and nervous and give them some help. Since I can’t bring in a h/j specialist, and there are monetary limitations, I look for coaches who are not “famous” or “big name”, but experienced and skilled enough to help a variety of riders, and wanting to get the exposure and extend their contacts in this area… mostly younger coaches who think that they want to work in the industry. I’ve ridden with some great coaches over the decades, some expensive ones. Sometimes it’s been good, and good learning experience… sometimes not. I’d love to bring some of my favourates here, for MY benefit, but can’t because horsemen in our area can’t afford it. In order to find the right clinician, I quiz my old time horse show friends for good “up and comers” in the industry that I am now fairly far removed from. This has worked well, the clinics are affordable, I get what I need, and local riders get some instruction which they otherwise would NOT get at all. Our lessons group 2 or 3 riders who are not too far apart in what they need together, and last an hour. Jumping lessons are grouped by height of jumps, not by age LOL. There is such a huge variation in “dressage” capabilities around here that just the “basics” of the training scale is something new to some of these people. Recreational riders also have often had little coaching, and just basic lessons in “cue and release”, setting goals and attaining them, basic riding position is helpful, staying straight, weight into heels, use of the leg, all this can be done in english or western tack.
I’ve got a new coach lined up for the end of April, a first timer for us. It’s $160 for the two lessons and use of the facility (to cover my insurance costs). Our last clinician (who has been GREAT for several years here) has got too busy to make the trip, had to find a new one. Which is fine, and expected. She comes recommended by a long time successful h/j/e coach who has been around for 50 years who has groomed and produced many top riders and young coaches.
We have a pretty good “core” of half a dozen local riders, who usually show up for these clinics, no matter who I find to bring in to coach. We are a mutually supportive group, it’s a bit of a party atmosphere. None of us are going to the Olympics, and are OK with that, but some of us do compete a bit. When somebody does a nice round in a lesson, there is often applause from the watchers. If a horse poops in the arena, someone (sometimes me, sometimes someone else handy) runs out with the barrow to clean up before it gets stepped in. Saturday night BBQ and yak session with the coach.
IDK if this description is helpful to you, if it is, give it a try.
I have my own list of amazing jumper clinicians I have ridden with who I would selfishly love to book a clinic with but I can’t afford to put on a poorly attended clinic 
