For frigate I'm think the engine hostage is too slow to do the SA strat. Henrik said like 28 seconds and it takes only like 24 at most finish level from there so it's probably faster to go straight to engine room warping pipes asap, then save slow hostage and faster hostage, the back to warp pipes, maybe open door for engine hostage I think he goes through the pipe room door.
My money's on that strat, maybe with really fast play engine hostage will still be slowing the run down, but if not, it'd be nice not to have to get really lucky with engine hostage not getting any stucks.
go for 52