When fly gaffing keep the rope length as short as practical. When the makos tail is roped and out of the water, don't think it's all over. Especially if you are in a small, low freeboard boat. Keep moving along slowly. A terrifying, and totally unexpected occurrence.
Makos can go into a coma and rebound several hours later.
If you are dragging the mako around backwards to drown it while it is in this coma state your in for a big surprise when it comes alive hours later. To avoid someone getting bitten, try to get a bucket to fit over the makos head and tie it to their tail. Once you have caught a big mako you will always be looking into the water for another. I suspect the UK waters may have more makos than previously thought.