I like to have my throwers use the summer to refine technique in advance of the fall where they will most likely have their time taken by football. It is a great time to build greater strength, and technical proficiency in the lifts particularly the olympic lifts. I even like to train with different modalities such as kettlebells to build this strength and even teach a little bit about the olympic lifts.
Here is a good article on kettlebell training from MF athletics.
www.everythingtrackandfield.co...ame_E_ArticleEllisKB
Hopefully this helps a little. Good luck with your training
Wil