To start off I will mention that the Capt on our boat said if we cook the Mako Too long it will be very mushy..Never heard of fish being mushy after too long, just dry??? I just thought I would preface my thread with this info..
I have tried grilling Mako steaks, baking and frying them..The frying was of but I found that in only takes a few minutes to get them to where they are done just enough and not too dry..
The very first time I put a couple steaks on the grill they came out great.( I don't remember the heat or the time I grilled them???) The last 2 times I put them on the grill I don't think I had the temp up high enough?? 300 F or so..and one steak turned out mushy and one was still raw in the middle??
I also tried baking some a couple nights ago at 350 degrees for 25 minutes.. Came out mushy

This is a recipe I found on the internet..I thought it would work?? I guess not.
If anyone has any advice that could assist me in my mission to get a decent meal out of the 60#'s of Mako I have vac-packed I would really appreciate it.. Thanks in advance..