Pylon?.........
No, I would not pull from the pylon. Or, let me say this, ........if your pylon is like the one on our boats, the aluminum retractable, then no.....it's not strong enough to handle cut and jumps.......
To tow a tube with a couple little kids.....that would be o.k. ...But I've already seen members in who have bent their pylon.
As for the rope length...? That will be trail and error on what works for you. I adjust my rope length for different activities. For kneeboarding, I use a shorter length. For tubing, I stretch out all 50 feet........:cheers: