Denfly Space Traveler - rim weight 85% with greatest spin rate possible.
Stable flight creating longer throws.
6-8% better distance than other discuses if thrown with high rotational speed.
The Shot Put and Discus Throw Manual has over 200 pages of incredible content; from technique to pre-designed workouts - this book has everything you need as a THROWS COACH!
Free videos and more on coaching the throwing events.