Hi Mlungu,
In Azores you can only spear 5 fish per days...so you have to choose wisely.
Spearing Dusky Groupers is forbidden... :waterwork
At the time you will be there all crustaceans are also forbidden. :waterwork
Since you are a tourist and if you are staying less than 30 days you don't need a spearfishing license...but my advice is to check with the Navy office first...
I've spent my last 8 summer vacation in Azores and have set foot on 8 of the 9 islands but only speared in S.Jorge, Graciosa, Faial, Pico (central group) and Flores and Corvo (western group).
S. Jorge is my favorite one...Faial is nice but already with a tourism development to big for my taste.
In Faial Island you can try a few dives in the channel pinnacles between Fail and Pico Islands...5 stars spearing. There is a dive shop just ahead of Peter Cafe...try talking something with them too.
Sorry not being much help but I've never used charter services in Azores.
Besides spearing I still don't know what I will be doing there (S.Jorge) this year. I will contact you if get the "great news" and you might just want forget Faial and come to S.Jorge...In any case let me know when you are coming and I will arrange something…
Cheers,
Rui