Run&Gun
Veteran
I just do four pelican card cases, two have a couple green stickers and a label that says READY and two have a couple red stickers and a label that says FULL.
I don't move them from full back to ready until they have been offloaded to a PC *and* backed up to a second source (always maintain two copies of anything).
I saw a clever sign in an edit room once that said "remember, it doesn't exist unless it's in two places" and right next to the sign was the exact same sign. Ha.
If you can't get through an entire shoot day (or project requiring multiple shoot days before non-rushed access to an offload computer) with enough memory cards to use the system above, you simply need more memory cards. In general, I try to have double the memory cards I need - you know, in case you have back to back shoot days and no energy that night for an offload or what not.
They aren't that expensive. I mean, not in comparison to the turmoil and regret you are experiencing now anyway, nor the cost of the reshoot. Memory cards are just the cost of the job.
Having lots of cards and never formatting once the shoot has started is my personal philosophy and how I like to work, but unfortunately we all know there are exceptions to every rule. I have been on a handful of shoots over the years where there just weren’t enough cards period. The last few times all involved shooting 4K. One was shooting 4K RAW with a Sony R5 recorder on my F55. The rental house only had two “cards” available. And another bigger rental house had all of their recorders and cards out on some big concert that happened to be going on that weekend. We had to shoot, dump and reformat. Fortunately it was BTS interviews for a big budget movie and a DIT/data wrangler was a mandatory position, so everything was backed-up in duplicate (maybe triplicat)and checked before the card was formatted and given back to me. And I ran an internal back-up in-camera, just to be safe. It was only 2K/slog, but better than nothing if something DID happen.