Tips for plugging leaks and reviewing HH's?

[GutPunch]

I have recently purchased SNG power tools, and have been reviewing HH's trying to find spots where a push/call was correct/incorrect. And also spots where I missed out on $EV+ situations and oppertunities where I should have pushed/called but didn't.

Can anyone suggest some tips for as how they go about reviewing their personal HH's? And also how you go about finding (and plugging) your leaks. What other tools do you utilize that have really helped you analyze your play?

I have also been considering finding a SNG coach. I would however prefer to do some personal assement first.