For those of you who partake in the occasional sandbag lifting (apologies if that sounds like a euphemism for something depraved), I've recently started offering form checks. Just send me video link to a sandbag training exercise you'd like critiqued and I'll get back to you with some feedback and tips - for free.
Details are here:
Do You Need Your Sandbag Exercise Technique Checked?
I've just had another video added to My Mad Methods too:
My Mad Methods - Exercise of the Day: Sandbag Strength & Conditioning Workout