May I suggest that a poll on the subject here may warrent a few more responses than the email process. The polls are easy to create.

PS Number 4 seems like the logical choice. While the idea of scaring the dog and annoying the neighbors may seem like a good idea to a select few, the general population wants the pipes for pride not as a tool to piss off the neighborhood. If anything the idea of the noise and annoyance to family and neighbors would be a deterent to a few prespective buyers. Number 3 was also good, but number 4 fit the whole deal IMO.