Hebegen Lake is located near West Yellowstone, MT. The trail is primarily used for fishing.
Fishing in Mid-May was good. Using a spin rod and lures was effective. Use silver spoon lures or silver color Rapalas. I was only getting action from Rainbows, but they were all 20+ inches. I recommend using a boat to get into the deeper areas of the lake. If you are coming from out of town, the Marina on the lake will rent steel framed boats with small prop engines for about $30 for 4 hours.