Hate to do this, but I’m necromancing this question. I did watch the video those many months ago and went with capsules for collision, it sufficed for awhile. Now we’re needed more accuracy and I went back to trying the convex hull collision with the same results as last time - the cloth drops right through it.
I’ll go back to using capsules and doing my best to make it work, but if you’re able to investigate the convex hulls and let me know why they aren’t working or what I could do to make them work, lemme know, this is very vexing, lol.