On my side (can’t speak for others), it’s no harm so no foul — maybe little harm (someone searching on google might get a false piece of info if they don’t read through the entirety of the thread)
We aim to help other(diver)s that’s all
I’ll do you one better; story time that might help your quest (for the family friend who wants to be an instructor):
a year ago a dear friend of mine had to make a choice on what rebreather to get certified on (he’s already a technical open circuit instructor) as a diver so he could be an instructor on
In his case, he’s based in Dahab, EG, he mainly dives in sidemount format and is extremely comfortable in it (the preference comes from a mix of what customers want and back injury that he has, sidemount is gentler on the joint due to the lower dry weight)
Now here’s the “instructor market” in Dahab a year ago:
Dahab is a learning hub given it’s year round warm and calm waters
There’s a quite famous “superstar” instructor in Dahab that teaches on the following units: JJ (gue and non GUE format), rEvo, Divesoft liberty; he has an exclusive license for his school in Egypt to teach them
AP is quite “undesirable” in the redsea for instructorion, at least for training in Dahab; it’s quite well established with boat operations but not for teaching (it’s also not in fashion with the younger crowd)
There are 2 other instructors in Dahab that have been teaching xCCR (and that extends to FX rebreathers from subgravity)
Now considering “making a name for yourselfl.. of there are other instructors that are “levels beyond you” in experience and teaching limits, no one will come to you
All these factors came to inform his choice, luckily it was simple enough:
A sidemount unit, that’s has no available instructors regionally (chest mount was also saturated)
The initial pool became:
Treb, kiss sidewinder, fathom gemini, FX in sidemount format
Treb and fathom Gemini are quite specialized ; not enough pool of traveling instructors and specifically the fathom is targeting “sump” diving — we only have deep caves in Egypt no sumps, so it’s more of a hassle to dive it for him on the daily
FX is still an fx unit, so less preferable as other instructors still have the upper hand
He chose the sidewinder eventually; and got on with it, we both did our mod1 class at the same time (but I’m a super noob in comparison), he already got to mod3 (depth/logistics limit on the unit)
He’s currently as we type in an instructor workshop getting ready to be a mod1 instructor after doing almost 200hrs on it
Tell your family friend to follow such a logic (somehow) to refine their choices (case depending); I believe also rjack gave tips regarding that (regional preferences)
(Btw this is why we were asking questions to clarify the situation on your side)
I hope it works out well