Background
The pilot landed the airplane on a lake to pick up two hunters. While the hunters were loading the airplane, a snow shower moved in, reducing visibility from 3 miles to less than 1/4 mile. Approximately 5 minutes later, the snow shower stopped and visibility improved to 5 miles.
Pre-Takeoff Actions
The pilot decided to take off. Before takeoff, he brushed his hand on the tail surface of the airplane and noted that the snow brushed off easily. He did not remove any additional snow from the airplane. When he started the engine, he looked at the tail and observed that the snow had blown off that surface. He assumed that the remaining snow would blow off the rest of the airplane during the takeoff run.
Attempted Takeoff
The airplane lifted off from the surface of the lake but would not climb above 5 feet of altitude. The pilot aborted the takeoff. However, there was insufficient room to stop the airplane before reaching the shoreline.
Collision
The airplane collided with the shoreline.