In fairness, some of the larger Dive Coasters have a number of riders per train that nearly equals that of a dual dispatch on Oblivion; the 8-across dive coasters are 75% of the way there, and the 10-across dive coasters (is Griffon the only one?) nearly equal Oblivion’s dual dispatch capacity in one train.I always wonder why this isn't more popular - it works great on Saw and Oblivion too but very few coasters seem to do it, even the other Merlin B&M dives don't have it, and have pretty poor throughputs as a result.
In terms of the Merlin ones; do they have low throughputs? I thought they hit around 1,000pph, which I certainly wouldn’t call poor myself. But each to their own, I guess! For a park like Heide Park, where Krake is, I can imagine that the 2,000pph that dual load would bring possibly wouldn’t be necessary on the vast majority of days.