I don't know anything about jumping/strength shoes, but I feel fairly confident in saying that ankle weights probably won't help a great deal. I'd be more inclined to recommend a strength and power resistance training program. Try this:
A: Strength
- Squat 3x5 (plus several warm up sets; squat to just below parallel where you get the best stretch-strength reflex in your hamstrings)
- Deadlift 1x5 (plus several warm up sets)
- Power Clean 5x3
B: Power
- Squat 3x5
- Jump Squat 3x3 (with a few less warm up sets as standard squats will function as warm ups)
- Snatch 5x3
Do each workout on alternating non-consecutive days (eg: Mon A, Wed B, Fri A, Mon B, Wed A, Fri B, etc). Start out much lighter than your max weights for the rep scheme, focusing on technique and small progressions every session. Deadlift should be your heaviest exercise. Squats should be about 3/4 of your DL, power cleans no more than 1/2 of your DL, and jump squats and snatches about 1/4 of your DL.