S w o l e

"Like, zoinks. You made me use 10% of my power."

The feats shown in Scooby-Doo! Legend of the Phantosaur occur during periods in which Shaggy is under hypnosis to cure his fear disease and his brain permits such radical actions, what you're seeing is peak human Shaggy. However there is another point in which he isn't hypnotized but rather in an extreme circumstance and undertakes similar feats. The rest of the gang would most likely be capable if they also underwent the same hypnotherapy treatment.

Ikr he just yeets across that rock and climbs out, and when he beats up that gang? He could do that without hypnosis. But now I am curious of instances in Scooby-Doo lore that show the other members of the gang showing their truest strength...