Clone-a-Willy Cock Ring Advice

My wife bought me/us a Clone-a-Willy kit for Christmas, and along with it she bought one of these cock-rings : http://www.lovehoney.co.uk/product.cfm?p=34099

Now I've read the write-up and watched the brief video, and whilst I have no doubt that I am just being dense, I'm still not entirely sure exactly how to use it for best effect.

I get that I need to trim it to my size, but is that flaccid or erect? If it's erect, then surely it won't do it's job as blood can easily flow in/out of my cock without being restricted by the ring?

Also, I don't know whether I should have it on before I become erect, or only fit it after I am erect? Is it meant to be slid on, or unclipped and re-clipped around my cock once I am erect?

Sorry for the multitude of daft questions, but I don't want to ruin the clone kit or end up in A&E :-)

I find cock rings Best around your scrotum rather than base of penis, they should be a snug fit, cock rings are normally put on flaccid

Hope that helps :)

I've bought a stretchy cock ring. Is it better to ejaculate first and then use it to have more pleasure?