Yes I have, but on a windscreen....I am a reasonably well equipped and skilled DIYer.
Most people do it because they aren't willing to put an hour or two's work into a $20 tank.
People claim to want to live green, but will never consider using a repaired item...
If you are scared you can't do the polishing, have an exact glass replacement cut for that side.
Cut the old silicone from the inside of the tank holding the glass in.
Apply insulating tape to mask the adjacent area you don't want silicone spread on, lay a bead of silicone, put the glass on, smooth the inside bead with your fingers, wait 5 to ten minutes, then pull the tape off before the silicone on it sets.
Leave the bits that squeeze through on the outside, you can cut them off once it is dry.
Leave the tank to dry for one day.
Do not use boat silicone with solvents for attaching to fibreglass, nor any type that claims to prevent mold.
Cape Town, South Africa.
Hi. I'm back.