How do YOU soak your orchids?

[greenpassion]

Hi all. I had recently read posts by a member who has concerns regarding watering when going out of town. I too am soon to be going away, for 6 days. I noted answers that suggested soaking, and I have questions.

I have 28 phals, 9 of which are mini phals, in 2" and 3" pots. I am not so concerned about the larger ones, in 5" to 8" pots, but the little ones (all in bark) have required watering nearly every other day.
I want to try the soaking method, and do the suggestion of soaking the evening prior to going, then watering heavily the morning I leave. I have always watered my orchids by taking them to the sink and pouring premixed water through the pots, draining them, and moving on to the next.
As I have quite a few to soak, is there a way to soak more than one at a time? I would think that it's not a good idea to use the same water for each one.? And, (sorry about this!) doesn't the bark float? How does one keep the bark chips from floating out of the pot? Unless the water level should not come up over the top of the pot...? Also, would it be beneficial to top dress the little ones with moss to aid in retaining moisture?