I don't have a photo, but I have this Plattinum Products mount set. One piece to hold the weather sensor unit inside the trailer during transport, and a tube to securely support the bottom of the pole outside the trailer:
https://www.ebay.com/itm/Plattinum-W...sid=m570.l1313
At the top trim of the trailer, above the support tube, I use one of these to secure the top of the pole:
http://www.biondoracing.com/product/ALB-QC2-2.html