In a nutshell
Get stronger, teach your body to apply this strength with speed, boost the stretch reflex and improve skill.
1) main sport exercises with added resistance - jumping with weighted vest
2) Assistance exercises
A - maximal strength - ie squats, deadlifts, overhead presses, core etc
B - Rate of force developement - olys, speed squats, med ball overhead throw jumps, pushpresses and jerks etc
C - DynamicStrength - light jumpsquats, weighted plyos, medball overhead throw jumps
D - Stretch shortening cycle - plyos, depth jumps, alttitude drops, power jerks, medball again etc
Eccentric strength as well -> depth jumps, alttitude drops