Since you are asking:
where are those adventurous prospective liveaboards
You might consider putting more effort into the sales pitch
? You obviously know a lot about the area, what makes it attractive, and why prospective live-aboards are missing out on something amazing. Share that stuff! Sell the adventure and the wonder of it all.
Do you get over to Madagascar
much? Does your cruising ground include the Comoros Islands or Mayotte? (I'm just looking at Google
Maps here...). If so, are those awesome places that this person has a chance to see?
To put it bluntly: "Yacht Management Learning
Opp in East Africa" makes it sound like you're offering a free organ removal
operation... on a boat
Hope you'll take my response with the good humor
that's intended. I am not interested in the live aboard
opp, but am interested in sailing that part of the world. Hope my advice
prompts you to share what's great about the area while also helping you secure the interest you're looking for.