OK, you don't have as large a problem as you think !

You are well above the waterline and could seal the rip with duct tape, for this season. You can patch it, to keep the rip from spreading, but patches don't hold well on the bead part of the liner

I think you can 'limp' through this season with your liner, but need to set money aside for a new liner next year.

I'll be happy to tell you about what's involved with replacing a liner, if you want to hear it.