First you should set the Massless property all the parts on the player being dragged to true. This seems like the issue you having rather than collisions.
I made the massless property, and fixed it so the humanoidrootpart is never massless, but… this occoured.
The player started litterally flying and I have no idea why
Have you been setting the other players parent to the character?
No, if you mean the ragdolled player to the carrier?
Same with vice versa.