Ann is difficult, if not impossible, to effectively fish from shore. It is a perfect rafting lake, and it is not bad for float tubes, although the shallowness of the lake causes submerged flippers to kick up a lot of silt. Ann has some nice drop-offs, especially off the north shoreline. Ann Lake almost always has activity on the water. When it's hot, this lake can be very productive.
Heavy algae grows in the middle of the lake, providing the cover that the trout crave.
Ann is really suited for flyfishing. Note the color of the lake's floor, and use flies that blend in. A few good choices are pheasant tail nymphs, Callibaetis, and scuds. If you can keep it from snagging up on the bottom, streamers such as woolly buggers are deadly. The catch at Ann Lake is brook trout.