Same as mine, no instructions. Start at the top, get the velcro on but not tight. Sides next. I think one spot on each side has to loop around the seat support or something, I dont remember.
Once I had everything more or less in place, snugged up the top first, then went down the sides. Dont think I did the bottom yet, cuz I knew I was gonna have to undo half of it to install snorkel later on.
I can try to snap a pic or 2 tomorrow if ya still stuck.