I just did my first pump track laps tonight. What a blast; I had no idea that this even existed. I got a full body sprint, both my arms and quads were quivering once I was done with my few laps.
A friend/acquaintance of mine built the track in his back yard. He is quite hospitable with it and hopes to get a race night going. I am going to try to get a regular time to go in and whip out laps for my sprints.
Anyone else out in PB land doing it or trying it? I would love any insight into it.