Maybe the last visit in the early winter you tip the solar panel more vertical so it's facing the sun at a better angle for the winter? That would help the snow slide off easier too. In the Spring, flatten it out as the sun rises in the sky.
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).