Semipermanent Fence
Semi-permanent fence covers the middle ground: divisions that stay up for a season or a few years, but shouldn't cost like a perimeter. The recipe is fiberglass rod posts (driven, not stepped in) carrying polybraid or hi-tensile wire with clip-on insulators — stout enough to forget about, cheap enough to move when your grazing plan changes.
It's the right grade for interior subdivision lines, lane-ways and leased ground.