I know a lot of people just take them off, but I've seen a few ask about removable snow flaps. I ran across this while looking at bar risers and hand guards. Looks like an interesting option.
https://roxspeedfx.com/collections/snowmobile-accessories/products/rox-removable-snow-flap-kit
https://roxspeedfx.com/collections/snowmobile-accessories/products/rox-removable-snow-flap-kit