Some good points here!
I will say something once about infringing casts. Im not trying to bogart all the water up front, but I am trying to develop a pattern that will also benefit you as the co-angler. Making sloppy casts and cutting out my angles will make me just turn the boat and you will be faced with one of two casting scenarios: a lot of open water by yourself, or no water at all.
If I have the big motor on and im sitting there at the helm waiting on you something is wrong. I have 'sat' a few people down with a little rap on the throttle. Likewise not securing your items because your an idiot is not my problem; it will be windy in a second, take your hat off, hold onto your drink, straps your rods. Im not turning around...