Seats For Seadoo 1800 What Is A Good Way To Repair A Vinyl Jet Ski Seat?

What is a good way to repair a vinyl jet ski seat? - seats for seadoo 1800

I have a 06 Seadoo GTX with a vinyl seat is torn and Hydroturf in some places. The long crack in the seat cover about an inch and a half centimeters wide. I have different products are like a glue that can be used, but do not know how they really effective. Who knows how best to use? Thank you very much