Thanks.

Problem with the antenna is getting it away from traveled areas. Side of the carport is the one place I could use as things are now. I suspected the proximity of the metal might be an issue. The carport catches wind and sways, too.

I could sink a mast anywhere needed, really. A solid mast, too, anchored in concrete, steel drilling pipe. I could make it very, very solid.

For the 18-foot antenna, some of the comments I've read about this one really rave. Say they've used it 10 years no guys, etc.

Really have to avoid guys because of animals and other traffic, and I don't have a solid building to clamp a mast to.