The 975 pictured is a shortfin mako. I have seen longfin makos this size from longliners as a comparison.
Capt. Verbanas 975 is indeed a shortfin. We had a shorfin over 800 so I have seen both species of makos in that size class. On a shortfin mako that size the pectorals are indeed large. A longfin has even larger pectoral fins and is much darker in coloration on its underbelly.
Capt. Verbanas was the best big mako fisherman. Period. His numbers prove it.
Here is the story from the 1275 pound monster that BieEye posted above. A little windy but a great account of how a little boat killed a world record Mako.
1) RIP Billy, i remember reading his accounts when i was younger. He was a man of legend. He boated some monster sharks
2) Its always this time of year they get some monster mako's down in Fla. Wasn't it last year around this time (maybe a little more into the fall) that canyon runner had a monster mako at night?
3) There are some BIGGGGGGGG makos here in the east. One that comes to mind is that monster pushing 1000 lbs. boated off of Mass. like 2-3 years ago. Boat was fishing for GBFT and they had a monster mako come swimming around. they had to enlist the aid of a commercial fishing vessel to boat the monster. It was in Fishermen Magazine.