I've just started mixing my own wipe-on finish: 1 part pure Tung Oil, 1 part MS, I part gloss polyurethane (found on a YouTube Video).
I like that I can mix it in small batches and now use the smallest container for the mixed amount as needed.
Sometimes I've used empty prescription bottles to hold the leftover amount with no problems.
The first couple of times I used a larger container and was surprised to see how quickly the poly started to skim over in a day or two.
Between the small container (less air space) and turning the container upside down when finished, it seems to minimize the amount of poly that skims.
I also came across the suggestion to use glass marbles to take up the air space. I haven't tried that yet as I tailor my mix to the item(s) I am finishing.
I've only done this for applying finish to dough bowls and it's worked well - I can wipe on a coat or two a day and so far, 4 coats have produced a good finish.