I shampoo/condition while attached about every other day. ST 30 perimeter and Ultra hold in front. I use Infusium for color treated hair and often follow up with the same leave in conditioner (very little). I am not sure what your question is seeking to answer, but I am at 3 week bond which has required a few front touch ups during that time. I always clean the unit very well with the same sampoo/conditioners once it is removed. I am not particular about the water driving though my hair. The shower beats down on it just as anyone would normally shower. But usually let it fall forward for the final rinse.
As a note to Count, I would think that the additional weight of your hair might pull the glue a bit, once the warm water has softened the bond. Mine always dries and the bond is fine, but for me, I would rather have it lift a bit in the back (from the weight of the longer wet hair) than in the front. It has saved me additional front touch ups.

I hope that this helps.
Zap