I have a two sets of ground tackle, but only carry one at a time. One has a lot more chain and a bigger anchor, so the weight difference is substantial. I also carry a portable generator in the cabin. There's a 30 gallon fresh water tank that can be full or near empty, an overabundance of fishing gear, and whether I'm full of fuel (almost 200 gallons) or running on fumes for a test run in the bay, makes all the difference in the world. It's been a long time since I went for a speed run, but 40 is my recollection, accomplished with a professional driver (me) on a closed course (no one around) with full safety gear (a whistle). Your results may vary.