How do I make a conveyor part that carries a player like a river would (No CanCollide Conveyor)

[NotAid_n]

I want to make a river part that slowly drags players through it, however idk how.

I tried using a normal conveyor part script, however that did nothing.

How do I make a script like this?

Normal conveyor script:

while true do
	script.Parent.Velocity = script.Parent.CFrame.lookVector *15
	wait(0.1)
end