I too hated jo, especially since I couldn't throw anyone with my clumsy non-understanding of any principles of leverage or ‘ki' extension. My ukes would hang on like gorillas and not budge. However, I became reconciled to the isometric workout it gave my arms when I realized that my ‘wingspans' started firming up, even though I was frustrated at my lack of skill in wielding the jo as a weapon. That still is the case, I continue to have a really tough time working with the jo, but I can train without considering it to be a waste of time. The dedicated effort is what counts - even if I don't comprehend the ‘deep inner secrets' at this time, the teachers keep assuring me that through the body, trial and error, understanding and skill will eventually be acquired.