Loren gives the resisted sprints as 30m accels up a slight slope (see about midway through the pdf):
http://www.nwaswimaths.com/programs/VIDEOS2.pdf.
I use 40m accels from a crouch start. The overspeed (downhill) is 30m flying from a 50m leadin for me, but this depends on your fitness (and your willingness for risk at MaxV!). Everything I’ve read about this says that the uphill/downhill segments should be in the 20-40m range (flying leadin not included).