John Hurkett wrote:
"What would be the minimum height that I could use?"

Distance to your radio horizon in miles equals the square root of twice
the antenna height in feet.

Suppose your antenna is up 50 feet. The square root of 100 is 10 miles.

Between two antennas at 50 feet each, the line of sight path length is
20 miles over smooth earth.

An antenna disguised as a flagpole can actually be a coaxial antenna.

Best regards, Richard Harrison, KB5WZI