I wouldn't deal with the contractor paperwork myself, but in at will employment states that's not even needed. Hire by W-2 and let go after a few months if it doesn't work out.

Thats absolutely my personal preference. The argument against it (very valid), is that if someone with a family relying on their paycheck quits their job to go work at another with that policy, and gets let go after 3 months, they're kind of fucked.