Well it looks like we are going to be smacked with a pretty significant cold front this weekend and I have a few theories on how things might play out. First off lets look at what nature has dealt us so far.... a pretty cool and late spring. Water temps (surface) on the metro lakes are still mostly in the sub 70 degree range with mid sixties being pretty common. Water temps up north are even colder. These temps are pretty fragile and fluctuate significantly with daily weather patterns as the temps I am measuring are near the surface and do not extend deeply throughout the water column. Fish prefer more stable temps and right now stability is in the depths not the shallows...especially in a cold front situation. So my first though is to target deeper water....on the deep weedline and a bit deeper especially early in the day when temps will be the coldest. Plastic swimbaits, dive and rise jerkbaits and slow rolled blade baits will get the nod first...work them on the weedline making sure you contact the cover once in a while and give it a rip to pull it free, this can be a great trigger on inactive fish. Don't rule out open water either...a bit intimidating and sometimes frustrating to work BUT it can be very rewarding early in the season.
When the sun comes out and things warm up a bit (this weekend or next week) some fish are bound to slide shallow and take advantage of the warm-up... after all they have been in cold water for the past six months and will welcome some warmer water temps. In this case keep things simple.... moderate to fast retrieve speeds with inline spinners can cover a lot of water and help you locate active fish. Once you find fish are using shallower structures you can work a slow topwater or continue with blades untill you see a preference.
Old School theory has everyone throwing smaller baits in the spring time but I defer and throw standard sizes and larger right away, big fish prefer a big meal and while exceptions do occur my results are much better with true muskie sized baits all season.
So sharpen those hooks, get the release tools and camera ready to hit the water, be flexible try different tactics and let the fish tell you what they prefer...nature has some general rules and I have my theories but in the end you have to get a lure they want in front of a fish that will eat before the fun really starts.