Are there specific recommendations for preparing my 2026 R-25 for winter. I keep my boat in a slip on Lake Washington. Wondering if I need a boat heater under the rear deck protect te lithium batteries. I drain the water system. My old 2020 R-27 had an electrical plug under the deck (for the grill) which I used for a small heater, but the new R-25 doesn’t have an outlet under the back deck. Appreciate any suggestions
