We had a pass-through port in the sidewall of our 2250; the cord was coiled up in the large compartment which made it a hassle dealing with when storing other items.
This was one of my first projects: I replaced the pass-through with a Marinco weathertight port:
We also purchased a 30A to 15A pigtail for the times when we aren't pulling anywhere near 15 amps, such as when the Sunseeker is setting in the barn:
Now all the power cords including the pigtail can be stored in a box (I used an old power tool storage box), then only what needs to be used can be easily pulled & plugged in.