We actually have 3 good meets going on in Los Angeles on Mt. Sac weekend. One of these, run by Cal State Long Beach on a very fast Mondo track at Cerritos College, is pretty popular with UK sprinters–Christine Ohuruogu ran 100/200 there last year. Since everybody was scratching from relays at Mt Sac like crazy, I drove over to the Cerritos meet (30 min drive).
I saw Christian Malcolm warming up towing a sled. It was a very small sled, no rails, a metal base of only about 8" X 15" and a single 10 pound weight on the sled. The weight PJ was using with spectacular SE results following 30m sled pulls: 5kg.
I’m going to have to try that