That's the best tool I've seen yet for pulling the engine. Here's the methods I've used:
1) Engine hoist. Massive failure. Didn't have enough reach or get up high enough. Or clear the trailer wheels.
2) Ceiling beams. Cracked one. Welded an additional steel support gusset and through bolted it to further strengthen the beam. Had to let all the air out of the trailer tires to clear the rear bench. Scary as hell.
3) Mechanics hoist. Ended up not being able to get the jack high enough to clear. Used a chain hoist from the top point of the hoist. Worked. Still sketchy.
4) 1956 Loggers Crane. Didn't have any brakes and I had to drive it 40 miles with the emergency brake (which barely worked) and the engine brake. Sketchy. Dangerous. I could have easily died. Had to hand crank the boom to pull the engine. Worked but was crazy.
5) Tree limb + vertical come-along + chain hoist. Oddly, the best method I have used.
Removing the foam is sort of a right of passage on this board. Those who have done it will never do it again, those who haven't usually won't listen to those who have. Good luck!
Former owner of a 1987 Supra Saltare. Current owner of a Malibu 23LSV.