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.
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