Here are some pics of my technique to protect my Windmill palms: Using Xtreme Heaters to Protect Sensitive Trees. Using Xtreme Heaters to Protect Sensitive Trees. Burlap, heating tape, recycled mulch pad ,light through cloth covers and your Xtreme Heaters! Thanks, will report back in the spring! R.Wilson I know the quality of your products from my 6 years of experience with one in my Sailboat The compact size of our Xtreme 300 makes protecting your PWC easier than ever RV Heater