These rules are time tested and, if followed, will ensure your athletes train successfully.
Rule #1: If you are injured, at all, do not jump train. You are wasting your time. If you are injured, then you cannot bring to bear all of your physicality into the workouts. This means you will not see good results.
Rule #2: Attend each and every training session. Each training session targets a muscle group or in some way benefits your development. Miss a workout and you miss out on the potential benefits. Your results will tell the tale, they always do.
Rule #3: Use proper technique for each exercise. Using proper technique adds immense value to your gains. Assuming you want to achieve rapid gains to your vertical jump height, the faster you adopt good form, the faster you will see eye-popping gains.
Rule #4: Give each and every repetition of an exercise your absolute best effort. Sometimes athletes are half-hearted about training hard. They want the gains but are not willing to put in the work. Jump training has no short cuts. You have to work hard to succeed. If you do, you will see great gains. One way of ensuring you give each rep your best effort over time is to write down how much weight you use for an exercise, the number of sets, etc.. Week to week, if this number improves, that is an indication you are pushing yourself. When I see athlete’s not improving, then their jump results will tell the same story. When I have seen someone’s vertical jump height flat line, then they are not following the 4 rules of jump training, period. Writing down set counts, rep counts, weight amounts can also give you an early warning to spot a lack of effort, poor form, injury, poor attendance or a combination of these. If you want rapid gains, then follow the 4 rules.