| I do every 10min on my O2 stop on my lowest gas if the stop is an hour or longer. Generally I'll do every 15min otherwise.
I don't know if it does any good but by the time I reach 6m I'm usually cold, tired and bored so I don't like taking the chance. I've also had pulmonary O2 toxicity once and it isn't pleasant (like a 24hr asthma attack).
I guess on your KISS it should be very easy, just switch the DSV to OC for a period and then back again. I think a KISS DSV is going to be my next big purchase.
__________________ "I hate to advocate drugs, alcohol, violence or insanity to anyone, but they've always worked for me" Hunter S Thompson http://www.snp.org |