Hi Don.
Yes, focus your attention on those sweepstakes that have prizes you are interested in and will be willing to pay the taxes for. When you find those, enter them to the max as per the rules. After doing so, forget about them. It will be left up to the "luck of the draw". Sitting around wondering about them will get you nowhere.
Then, move on to the next sweep. There are plenty of them available to keep you busy.
I posted a couple of months ago about how I had taken a 5 month "break" from my sweeping. (only entering the 1x only sweeps) I still have not got back into my daily routine...just can't seem to swing it yet...but even with the break I'm still taking, I've managed to accumulate just shy of $6,000 this year alone.
For a complete list of my total since I started sweeping, you can go here:
http://tinyurl.com/bdrmc
Good luck! And just keep entering!