Rec diver gets hurt or has a medical situation on dive 1. Now everyone is in a pickle because the boat has a duty to that diver but also your group who wants to gallivant for 3hrs.
Recall signal...cut dive short, deco out.
Scenario two - weather picks up. Everyone else is on the boat and getting beat up or worse because you want to gallivant for 3hrs.
If it’s a double dip on the same wreck, they are gonna get beat up anyway. The unicorn of a perfect storm where the seas go from 3’ to 10’...doesn’t happen in a 2-3 hr timeframe...and certainly not without warning. They have this thing called the weather channel...and radar...use it.