Well done Will! It was hard to find target species out there!
Just to add to Neal's bit about "the one that got away...twice", it hit my slowly-lowered pair of 6/0s to 100lb mono with mackerel and squid bait and instantly took line. Comments of bass and pollack were dropped after long powerful runs, with the Avet SX on maximum drag. Twice it slowed and hung in tide, taking line slowly, and twice it ran back hard towards me, making me wonder if it was a massive tope. I managed to catch up with it twice, and when I did it kicked off in a different direction. The third run was the fastest and most powerful, and even with an estimated 20lb of drag it gave the impression of not feeling it at all. I guess it took 100m on the 3rd run, and this time came quickly back towards me without "hanging". This time I didn't catch up with it, and when I caught up with my tackle it had shaken the hook. The trace had a slight roughness, but not as if it had been heavily sand-papered, so no clue there. Shame I didn't get to see it.
Dave's hook-up on the last retrieve was also mid-water. He only experienced the one run, taking 300m of new 50lb braid (plus some backing) in an estimated 2 minutes, but it was downtide. Even with his gear, he couldn't slow it, turn it, or stop it. Definitely the same characteristics of huge size and power. At the time, the line seemed to be "zizzing" off his reel at enormous speed, but 300m in 2 minutes is 150m/min = 9km/hour = about 6 mph. Unstoppable definitely, but not as fast as a tuna or marlin would have moved - and nothing jumped. Even if it was a 1 minute run, a 12mph speed suggests shark rather than tuna - though it crossed my mind at the time. His line parted (or was bitten) below the swivel, giving no clues.
Thanks for a great day out Neal, with a PB Blonde of 18lb 6oz (returned), a bass of 3lb 6oz and whiting of 1.5lb or so, and a bonus edible crab that's now picked and ready for lunch!
Mike