Lol, very helpful advice your getting there Shaun
You asked this before, what happened to your last 75ft length?
I would suggest get 2x 50fts from Woodbridge and cut one in half and do a permanent join with silicone and a and a screw on type joiner, if there's such a thing?
As I've never heard of 75ft length being sold..?
PS actually I think Joe Bristow sells cut to suit.