Dropper Loop questions

[Cbad Mike]

Hi guys,
I have a few dropper loop questions for you.
I've used dropper loop set ups for surf, bass, perch, and typical smaller fish. I've always just used a leader on the hook and tied it to the loop which worked well for the smaller fish but I've lately been fishing for YT and WSB.
I've read everything I could find on BWE and the net and am still alittle confused so here's my questions...

How large of a loop do you normally use?
Do you loop or tie the hook directly to the loop?
Do you cut the loop to make a single leader for the hook?

I'm planning on using the rig with squid and macs as bait.

Thanks for the help,

Mike