Removing paint

I bought this yak that was painted by the previous owner. The paint is now flaking off and I'm wondering how to get the rest of it off. Has anyone done this? I'm thinking a pressure was would be fine?

what kind of paint?if its flaking off A pressure washer will work.  I have used brake fluid on dirt bike plastic with no problems test first.

I don't know what kind of paint it is.
Thanks for the reply

Paint doesn't really stick well to the poly so it will probably blow right off with a pressure washer.

Coolness,
I'm on it

Just try it at the local car wash first! Mineral spirits may do the trick also but rinse off throughally and test in a small spot first.
What I also found that works is if you have access to a hairblower or heat gun (but watch out for over exposing the plastic) this will bubble the paint fast however if left to long (heat gun) will bubble the plastic.