Hi everyone, we've been so busy trying to get a lot of projects up and running this spring.  We have a 60' x 100' garden and only one spigot that's at least 50 feet away.  It's a bear to water this garden--SLOW process.  We'd like to install some additional water lines to make watering more efficient.  I saw a garden in a town a ways away and it had several spigots along its length.  Is there a rule of thumb for big gardens--one spigot every so-many feet?  Thanks in advance for any advice.