Did you ever try the Gauntlet? Start in the Rocketyard, run through the Refinery and down into the Hive tunnels, come out where the Shrieker is, summon your Sparrow and get to the Forgotten Shore as fast as you could. You could also do it reverse, or without Sparrow if you were feeling lucky. Trying to do that and beat my friends times were probably the most fun times I've had in patrol.