The annual fishing celebration that is the Wisconsin walleye season opener is Saturday, May 2, so you really don’t have much time to figure out a plan—where to go, what to throw, and whether the sunrise bite is worth it. There is only one opening day of the season every year, so here's a simple plan that gives your best shot at making it one to remember. Start With Water Temperature, Not the Map Step one. What’s the water temp? The single most useful number you can know this Saturday morning is the water’s surface temperature anywhere you launch. Based on current trends and weather data, it looks like most of Wisconsin’s inland waters will be somewhere between 48 and 56 degrees. That temperature range means most walleye will probably have finished spawning, or will just be finishing up. They’ll be hungry, but they’ll be sluggish. They probably aren’t going to be excited about chasing down anything moving too fast. If you find water above the 50-degree mark, you’re already most of the way there.…