Short of taking Tres Martin's class, what else do you experienced boaters recommend for improving your skills and safety as a boat operator?

I've been driving ski boats since I was a teenager and just spent my first year with a performance boat. I played sponge and soaked up as much info as I could from others and applied what I've learned in past years, but I know I have a lot more to learn. Are there any videos or books you'd recommend?

I took a Coast Guard Auxiliary Boating Course WAY back in 1986 when I was in high school. I haven't taken anything since then.

Just wanted to tap into the experience on this sight.

If your looking for insurance?
Tres is the ultimate classroom... U can watch videos that will scare U into safety....

The true offshore driving class I have taken with hands on 1 on 1 with a Tier 1. Multiple Nat. & World Champion.200-many... yada yada... http://www.international-performance.com/

1st class experience.