HELL NO. In some states non-compete clauses are illegal and the rest take a very very stringent view of what is "conscionable" and what isn't. This would certainly be a candidate for being so extremely restrictive towards your ability to practice your "trade" and make a living that its almost a joke. If you need to keep the peace, sign it and let them try to find a lawyer willing to stand in front of a judge. Not sure how many would want to tackle the numerous organizations that would most likely be interested in your side.