Chutes are cute if there's zero chance of chucking something far enough to damage/injure. Or in one instance had house in the NE that had a lawn that was above the level of the house. With a freeze thaw cycle glacial till pops out of the dirt...window didn't like it. Otherwise, bungee up. Mine will load up to the tune of 25# or more.....have to use an air hammer to break it all out....and it wasn't wet (OK Bermuda), so, there's that.I love Gator blades and run them all year.
3” is very short, try at least 3.5” and preferably 4”.
If you have an exit chute, bungee cord it up at a 45 degree angle and throw the grass out as far as it will go.