Maybe your heaviest friend and his dog....and his brother, too.
The good thing is once you make the first time fit, you don't have to muck with it again, as it is easy after the first time.
One word of caution. Trim small amounts. I used a bench grinder to remove fender material a little at a time to ensure I did not take too much off. The grinder makes short work of the plastic, so makes the triming quick and easy.
Rick