Stropsicle

[seawolf]

Hello all,
Is the stropsicle made from 3/8" double braid as depicted in the Rigger's Apprentice page 97,
strong enough to use as a strop at the top of a 32' foot deck stepped mast, as an attachment for a temporary stay for the swap out of an old jib stay?
I would shackle a 3/8 inch line to this strop and tension below with a block and tackle or come-along.
Or would it be best to make a strop out of amsteel or dyneema?
The strop would be going around the mast with an external mainsail track, so not an entirely smooth surface.
Thanks.
Bob