I just recently jumped onto the CrossFit bandwagon

I've been training off and on for years, followed many many different protocols depending on my goals the time. As I got older my focus changed and was less about how I looked and more about how I performed under stress.
So functional strength and endurance is what I have been trying to focus my efforts on and I believe CrossFit is a great way to do this. It is not the ONLY way but it makes for a great workout that is both challenging and fun, which is important to me. Plus the range and variety CF offers is excellent!
Checkout some CrossFit vids on YouTube and you'll get a sense of what it's about.
I like your training methods John. Low tech is usually better than any machine or fancy equipment. Good old fashioned circuit training working on the anaerobic system is awesome for preparing for a fight.