[Spridgets] what does a shortblock weigh?

[derf]

I've pulled them by hand, in my younger days.  It helps to have
someone on the outside to hand it off to.
I wouldn't use just any 2X4 joist for a hoist, though.

My rule for Harbor Freight stuff is divide by two.  If is says 1 ton,
then I consider it 1/2 ton.
If it says 500lbs, I would consider it 250lbs and opt for the next
larger size whatever to pull a Spridget short block.