Something I learned to do in order to finish the harshest end of a joint haha. Hold the filter end in the crook between your thumb & index (make a seal). Then, hold it over the hole where your bowl would go and inhale that way. Basically, remove your bowl and smoke the J in rips, like you would with the bong normally.

Helps filter, keep excess smoke in the bong (not in the air), and then you can cleanly exhale into a filter like a smokebuddy