ISC 3/4 rigging block sling size

[JTree]

I'm about to buy a couple of 3/4" ISC blocks and intend to make some Tenex TEC loopie slings for 'em. The question is this: What size Tenex do I use? According to this (from ISC website):

http://www.iscwales.com/uploads/news-doc...cifications.pdf

they are designed to be used with 29 mm slings when the sling is constructed out of polydene, but Tenex flattens out under load more than polydene when wrapped around the bollard. I've reached out to ISC, but I'm not holding my breath on a response regarding a sling material that they didn't use during design. Thoughts?

 

[fireaxe]

Been using 3/4 tenex slings forever. I prefer tuflex slings for sure though.

 

[Norm_Hall]

I can get a 3/4" spliced eye DB sling on a 5/8's" ISC block. I would think a 1" would fit on a 3/4" ISC block.
I only have CMI and Hobbs 3/4" arb blocks.