Doesn't the US have an active contractor market like the UK? In the UK there are lots of job boards with a contract filter and many recruitment agents deal exclusively in contracts rather than perm roles. Is this different in the US?
https://jobserve.com/gb/en/Job-Search/
Filter the results on 'contract'.
Hit me up for tips if you're thinking of going contract. I've been in and out of the game for years and making more than double than I would as a perm.