Drifting skis issue

Hi, so I have a set of skis that utilizes Velocity, which is set to a part to make it go (similar to an unanchored conveyor belt).

Problem is, it drifts like crazy. How can I reduce the amount of drift that it has?

video of issue:
https://i.gyazo.com/e32684e3f1d46fefcb1a31c1f9a371df.mp4

Its drifting because there is no friction.

If you are using forces you can do something like below with adding a drag force.

Not sure for a Velocity method.