We leave ours in the slip at all times, the bilge pump switch stays on, the pump will only pump when there is water present so hopefully it will not be running all the time, I think it cycles every couple of minutes to check for water so there will be some drain over time even with no water. We had a lot of rain last weekend and some does get through our cover so there was definitely some pumping, we have not used the boat for a couple of weeks but this weekend the battery (single) started the engines with no problems.
Definitely take the clean out plugs out, I left mine in and had to use the ice method to get one of them out, we are new to the boat as well so that is definitely a lesson learned.
Totally agree about the EZ-locks, little bit more of a hassle taking the plugs in and out but well worth it for the peace of mind, you can get them as a combo deal with the Cobra fins, I put the complete package on before we used the boat, fins, fangs and locks and I just love the way the boat handles, managed to dock yesterday using mainly the engines and minimal steering input (no wake mode and using fwd/reverse on different engines to turn the boat), we did spend a lot if time practicing in the middle of the lake to understand how it works - so much so that another friendly boater stopped to ask if we were ok or needed help as they thought we had broken down!!