You and I are in the same boat here. At this time, as far as I know, there is nothing that can do exactly what we need on the new site (scrape by term...sort/exclude by payout) I have been told that Hit Scraper would be updated. I have not specifically been told that it will be updated in time for the forced switch over...Friday!
If it is not ready (which I'm praying that it is), the closest I can tell you to get you there is to install a page reloader (I'd be using ChromeReloadPlus), go to the main hits page of the new site, set up a search for "survey" with whatever filter you want (available from the site page) and have it reload every 5 seconds.
This is at best a crutch. It won't alert you when new hits get posted. You'll have to right click and open hits in a new tab(or else you'll have to reset your reloading page's search parameters every time you click a new hit and want to go back for more).
I'm deeply worried about this, it's going to reduce my pay by half as best as I can tell.
Please...somebody update Hit Scraper before it's too late.
Further discussion about this at :
http://www.mturkcrowd.com/threads/concerning-new-worker-site-and-scraping-question.2858/#post-1064100