I did three months of g-surg sub-i's with two weeks off after the first one (at home) allowing time to get myself half way across the country for the two strait away sub-i's. I didn't mind the work (if you can't hack 3 g-surg sub-i's, then maybe a g-surg residency is not for you!). What got frustrating was not being able to sign my own orders -- more specifically answering my intern's questions about patient management, but then needing the same person cosign my stuff.
You might also want to consider a different surgery away rotation -- maybe vascular, or trauma -- if you find something that interests you.
If you're a 3rd year, I applaud you for thinking about this now. Hell, a year ago I wasn't even going to be a surgeon 🙂