I am considering installing these on the deck of my pontoon boat. Are these soft enough for barefoot? I'm also concerned about water drainage onto the marine subfloor. Has anyone used them for this purpose? Thank you.

You can install our Flagstone Rubber Pavers as flooring on the deck of a pontoon boat, and customers have. Rubber flooring is very slip-resistant and more so when wet. These rubber tiles are not soft underfoot but are comfortable. The only thing you will notice is that they will get warm to the touch in direct sunlight. The tiles wouldn't damage your marine subfloor. Water is par for the course with any boat, and having these tiles over the subfloor will help reduce the amount of water that would hit the subfloor.