STEP 1:
You'll want to cut a patch that covers your rip with about 2 inchs of room on every side. Make the covers round so they won't catch. Use alcohol or a compatible solvent to clean your patch and your torn vinyl so you'll get the best adhesive.
STEP 2:
Spread 999XD both on your patch and on the object you'll repairing, then let both sides sit for between 2-5 minutes so the glule can go from smooth to tacky.
STEP 3:
Apply firm pressure on your patch or press evenly with a rooler if you're got one. 999XD dries in about one hour, but it reaches full strength in about a day.