Yacht flipping seems to be a very niche industry, and my Google search on it didn't make it look like a very promising one. So your potential pool of buyers looks small. Are there any existing companies (with a web pressence) who are currently engaged in flipping yachts?
Your other major issue is that this variation of the name is (at best) the 4th best option. I would prefer to own any of the following:
YachtFlipping
YachtFlip
FlippingYachts
Your version makes it sound as though the company/individual is only flipping a single yacht, or even literally tipping one over. It's not very authoritative.
You currently have it listed for 488 at Afternic, and I think that's about right for a potential end user. I would peronally not renew the name, though.
When investing in a niche exact match product/service name, make sure you're getting the best possible variation of the term.