Once a customer adds to the cart it is necessary, from my perspective, for the cart to always be visible if it is shown on one page block and it must always be absolutely correct. So I'm abandoning the idea of boost AND the cart showing in page blocks. I loves my boost so I am unwilling to let it go.
My approach now is to use the uc_ajax_cart in growler mode. This way the user receives positive feedback when adding to the cart. I should note that I do not send the user to the cart page everytime they add to the cart. This would be another option of course but I find it tiresome for the user.
916Designs, This is all about usability and it changes from site to site. So I am aware that what makes sense for the site I'm working on does not apply universally.

However I am having an issue with uc_ajax_cart that I am posting on a separate thread