What are my options for a privacy screen on a property line (fence exists, but cannot make it taller). I live in a rural area where winters may dip to -25F and summer heat may rise to 100+F. We live on a lake and it can be windy frequently. The location is mostly sunny and would need approx. 50' of screen. Would like something that is visually pleasing and not invasive. Winter privacy is not an issue, since the neighbors go south starting Nov - April. Neighbors in favor of more privacy, too. Anybody have any suggestions that won't cost me an arm and a leg?