I was reading an article by don rearic about eye screws, and I had room so I'm like why not <img src="/images/graemlins/smile.gif" alt="" />

Where I live there are plenty of trees, and I can save lashing line by tying things to the eyelets instead of having to go all the way around a trunk if there are no branches low enough to reach.

I can set a trout line across a body of water, or a line between two trees to drape a space blanket/poncho, or four trees to make a canopy.

Not absolutely needed, but nice to have I think.