You may be able to find terra cotta pots that weep more water than the higher quality Italian ones. I have read members here saying they were able to use those when regular KoolLogs didn't stay moist enough.
I recall reading here of people glueing the rims of two pots the same size together, putting a plug into one pot's drainage hole and hanging the contraption. The inverted pot's drain hole was used to fill the pots. I think other people set on pot, inverted, into a dish of water with the orchid mounted on the pot.
Eureka! I just remembered this thread on using an olla.
Neo on an olla