instead of mining for Tritium you can park your Fleet Carrier (FC) outside a mining site and offer a better price than the current selling price.
not as much mining site as a trading post. you
find some place that sells good amount of tritium, park there and set buy order thats better than the stations sell order... not my practice but ive heard it works fairly well
How do you "advertise" your buy order most effectively?
having a link to
inara is probably the best way.
go to the site, create a profile, link your account and then either update your info manually via your inara profile page, have an automatic inara update (that takes place daily iirc) or have some kind of 3rd party tool do that for you automatically (i use
edmc which automatically updates my location and stations market at every dock).
just for the purpose of updating your carriers market the manual update should suffice. your carrier will then be listed with all the other markets on the site and commanders will be able to find it.