 To ensure a watertight incision at the end of the case, I stromal hydrate both my site port incision and my main wound. I use a 30 gauge cannula with BSS and I stromal hydrate the corners of my incision and then go back and forth along the roof of the incision to make sure it's watertight. And if in doubt always go back and rehydrate a wound, you don't have to go too deep but make sure it's nice and watertight before the patient comes off the OR table.