We did the Lower Winni with a group of Boy Scouts for Whitewater Merit Badge and the river was perfect. The water was high and the rapids were fun and a little technical though the bridges, which was exactly what we were looking for. The trip was fast--only 1 1/4 hrs to run from the put in at Silver Lake to the take out in Tilton Village, so next time we are going to run the whole thing, take out and go to the top of the rapids and run them again as a whole trip to make it a little bit longer. There is another put in at the 140 bridge as the river runs under it if you want to miss the lake or run the rapids twice. Great time and great fun.
Watch the first railroad bridge--stay right though the bridge but then you have to paddle left to avoid some rocks on the other side. The second bridge keep in the middle, then bear right at the river split in the town park for the best water. When you go under the last double bridge in town keep left--the bridges are low so watch the water level. Have fun!