Potentially useful cards saved along with mwDeck files

[OlSpazzy]

Does anyone have a method to keep potentially useful cards saved along with their decks without using the sideboard to accomplish it?

I've always used the sideboard in my mwDeck files to store cards that I might use to alter the actual deck at some point. I don't generally build real sideboards as I rarely play 2/3+SB games. However, having anything other than 0 or 15 cards in a sideboard gives an illegal format type and a lot of serious players refuse to play someone showing [???] rather than the actual deck format.

If I have less than 15 potentials to save along with the deck, I just increase the count of enough cards to bring the sideboard to 15, but this isn't always possible, and sometimes I have more than 15 individual cards I'd like to save with the deck. Not to mention, if I want to make a real sideboard and still have my potentials list, I'm screwed.

[Huggybaby]

You could list them in the comments field that MWS has. I don't know any other way.