Player Speed

[sssssssssss]

I'm really just wanting ideas on the best, most effecient ways to slow down a player using default movement.

I know you can get better results with this sort of stuff on custom movement, but I need it for something else. I tried to do the opposite of "staff boots" style and got a butload of callstack errors... so some ideas if someone wouldn't mind? And I'm not asking you to do it for me, just need a different point of view to approach it, either my brain is racked or I'm just too focused in a bad way lately...

Thanks you.