There's a smaller guy maybe 5'8" and 140lbs soaking wet here in CT that can get over 400ft easy with the sidearm. I've personally seen him drive an open (initial drive off the tee) par 4 hole using a beat in echo star xcalibur about 420-440ft. He uses champ firebirds to get 350-400ft of controlled power
in situations like long uphill shots and tunnel shots.
He's kind of like barsby or big germ where the sidearm looks effortless and often uses discs like champ eagles and branshees for sidearm hyzerflip touch shots.
It's sometimes more fun to watch him pummel champ gators past 300ft holes then huge drives though.