The marine glue is installed with paint rollers (medium nap). To apply, roll half the decking with glue and smooth out the new carpet. Repeat for second half of decking, making sure to roll out all the air pockets. It will take about 35 minutes to complete a 24 foot pontoon boat using our marine glue and roller. No mess to clean up, just throw away the roller. Roll on is so easy! We recommend it verse the trowel-on method. We are an environmentally consensus company. Therefore, Everythingpontoon.com marine glue is shipped in recyclable containers. Boat Size: 19 foot to 20 foot pontoon you will need 2 gallons of glue. Boat Size: 24 foot pontoon you will need 2 1/2 gallons of glue. Boat size: 28 foot pontoon you will need 3 gallons of glue.