Our neighbor's fence fell down between our property lines, and they had it removed. However, because we have the above ground pool in our yard, we now have to put up a 4' fence where there's was. I'm not sure if our neighbors want to split the cost or not (I'll ask, but WE may have to pay the entire cost of the fence between our properties if they don't want to split the cost). Due to finances, we have to go with the cheapest fence possible. What is the cheapest fence that we can put up? I was thinking a 4' chain link fence would be cheaper than wood. Any advice?