Check out this video. As soon as I put the vacuum plate over the skimmer my hose crimps. See attached video. I tried it without the vacuum plate and the same thing happened. I am 100% sure all the air is out of the vacuum hose as I put it over the return for 2 mins. Is it possible I just bought "cheap" hoses? Maybe I need better quality filter hoses?
Tfp hose crimps during vacuuming - YouTube
Tfp hose crimps during vacuuming - YouTube