Originally Posted by toe72
What is worse? Over or under inflation? I will be using 303 and covering the boat when practical!
Underinflation. It chafes the rear seam until it blows out. Welded PVC is less susceptible, but it can still be a problem.
The adhesive used by Zodiac is a special Bostik glue...rated for a minimum 12 psi temporary overpressure. Inflating to 3.48 psi and having the sun heat it up to 3.8 psi isn't going to make a huge difference. It's not recommended, but let's put it this way : I've fixed plenty of boats with blown seams due to underinflation...never due to overinflation.