Rikti Mothership Shield Surfing is fun, in a mindless sort of way. Its easy and dangerous. Just jump onto the Shields of the Mothership, point yourself in a direction and surf yourself silly. Me and a friend of mine spent about 15 minutes Surfing up and down the Rikti Ship Shields. If you wipe out and fall off the shield you may end up in a group of 47+ Rikti and depending on your level die horribly, but never you fear there is a hospital conveniently placed right in the Rikti Crash Site Zone, and its only a short trip through 43+ baddies to make your way back to a place of fun and excitement.
Surf on fellow Heroes. Surf on!
I can only imagine what it would be like with 30 or more heroes surfing the Shield.
Disclaimer: Surf at your own risk. Lifeguard not on duty.