After watching youtube videos of mice swimming, I've rearranged my articulated mouse pattern. Mouse swim like dogs with most of their body submerged and only the head above water. To mimic this I decided to wrap the tail end with rabbit strip and add a foam collar to add buoyancy to prevent it from dragging the whole fly down. If only I had a legitimate trout water to try these out. There is always largemouth but it's not the same.