Does anyone have a tip to finding good opportunities for MR's on NW?

I have a bump voucher for $300 that expires in May, I'd like to do a MR from BDL anytime between May 1st and 5th, with a goal to earn as may segments and EQMs with a fare around $425 or less.

I did some searching on NWA.com and found some fares that would allow me to fly 3 segments & 10k EQMs RT to Hawaii for around $580 all-in, but that's a bid more than I wanted to spend. I also found BDL-LAX for around $230 all-in that would yield 4 segments and 5172 EQMs, but in that case I wouldn't even be using the full value of my $300 voucher.

Can anyone advise me if there is a better website that will allow me to search a range of dates and destinations so I can find a routing that will work for me?

I just happened to be looking for good fares out of BDL. Do a multi-city search on nwa.com, Kayak or Orbitz. BDL-JAX-LAX-MCO-BDL, with the MCO-BDL leg on the following day.

Worked for a 5/1 departure, you should be able to get at least 8 segments and more than 8K EQM for $390 all-in.

Technique to find this was:

1. Farecompare Flyertalk Tool (http://www.farecompare.com/search/flyertalk.html?departure=BDL&fares=Domestic&carrierFilter=NW&filter=ALL&ppm=9999&savings=99999&distance=0&sortby=price&p=1) to find low absolute price on NW from BDL;
2. Farecompare Flyertalk Tool (http://www.farecompare.com/search/flyertalk.html?departure=JAX&fares=Domestic&carrierFilter=NW&filter=ALL&ppm=9999&savings=99999&distance=0&sortby=ppm&p=1) to find low PPM on NW to anywhere from cities identified in step 1;
3. ITA Software (http://matrix.itasoftware.com) month-long 1-night search between target cities to find possible availability, fare class and routings;
4. Kayak (http://www.kayak.com)/Orbitz (http://www.orbitz.com) multi-city search, then nwa.com (http://www.nwa.com) to confirm availability.

Thank you - I'll be sure to use the mulit-city tip in the future!