Greetings from Michigan, USA

We have a 1/3 acre pond that I would like to implement a skimmer for, or something to help keep the surface of the pond clear of debris. We live in the woods, so the pond gets a lot of fall off from the surrounding trees (pollen, leaves, etc). I would install an off-the-shelf skimmer (or three) but the "problem" that I foresee is the fluctuating water level of the pond. In the spring after the snow melt, the water level is high. By late July, the water level will recede by as much as 2 feet typically. Off-the-shelf floating skimmers that I have seen are more for small decorative ponds, so not practical here. Does anyone have any recommendations? I'm open to custom designs if anyone has done something with their pond that works well.

Thanks,
D