Another option I thought of as I was cleaning out a box of stuff.
A few years ago our meter pole started to lean becasuse of moles.
I initially was going to use guy wires to hold it upright and bought some push in the ground plastic anhors for dogs. I doubted their strength and pushed one in to normal soil, put 20 feet of used climbing rope on the ring and 4 adults couldn't budge it. I suspect you could make a cheap temporaray support by using 10 feet of PVC pipe that would slide over your mast and maybe on of these anchors if the strongest wind comes from the west like around here, or use 3 at equally spaced 10 foot long guys.
We bought these at Pet Smart but I'm pretty sure you could use 14" scrap iron pipe to accomplish the same thing. This would get you through the winter while you search for a stronger rotator.
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If there is interest I'll post a photo of one of the anchors before I find a new home for them.
We have a cat who'd curl up and die of fright if we staked her out.
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