Campus board training, done correctly, creates maximum force and velocity = increased power. For the highly trained athlete, plyometric drops on the campus board are one of the best ways to improve strength, and consequently get injured if done without a progressive approach or used too frequently. How much you should do per week/session depends on many factors: your age, training age (how long have you been climbing), current level of conditioning etc. An easy rule of thumb when training for power (which is main reason for using the campus board) is to finish when you feel stronger than when you started. The goal of using a campus board is to measure how far (skipping rungs) you can move from hold to hold, progressively using worse holds – not how many times you can ascend/descend the board. Eight latches should be the maximum number of times anyone hits during a single set of campusing, any more than that and you need to re-evaluate whether or not you are using enough intensity. Reaching for farther holds requires greater starting power and speed during your pull.