I have posted a thread that contains some tips that I think have at least the potential to become part of the bag of tricks container gardeners employ to deal with heavy (water-retentive soils). I didn't want to post it on multiple forums, so I posted where I'm most at home - the Container Gardening Forum. For those that might already know everything I shared, I apologize, but I'm most interested in helping those who are struggling with waterlogged soils and want/need some relief. The embedded link below will take you to the thread:
I am posting this message on a few forums in the hope that those who read it will feel it merits sending growers struggling with water retention issues in containers over for a read as you come across them in your forum adventures.