Branches of Cedars tied together could work too, but you're right I'm sure those 6-8' fir and scotch pines are perfect for what you want to do. Agree with your property line assessment...you are in TX, after all! If Cedars are as invasive as they are up here I'm sure any rancher would be very grateful for you removing as many 3-6' Cedars from his pasture as you want. Do you have Eastern Red Cedars down there?

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

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