Replying to Advice for a pvc down rail set up

I'm in the process of building a backyard jib. I have all the snow so I'm going big with it at the start. First set up is an uprail to butter pad to down rail. Uprail and butter pad I've got sorted. My issue is the down rail.

I'm working with pvc pipe and have all the snow to work with. Without drilling holes into the pipe to add wood supports, what is the best way to set up the down rail so that it:
A) doesn't slide out of its placement, and
B) I don't end up with a 'clump' of snow at the end of the rail to catch.

I'll reply to the thread with photos.