MultiDeco includes the descent time in the bottom time. 18m/minute to 150m = 8mins 20secs to descend (yeah, right) leaves 40 secs on the bottom for your WOB test…. Then two hours for the ascent.
Edit…
Also set the ascent rate from the normal 9m/min(30ft/min) to the v.fast 18m/min(60ft/min)
Now down to 90 minute runtime.
What would be a suitably lunatic ass/decent rate for a geezer on a scooter on a mission? 50m/165ft per min?
MultiDeco can do a max of 38m/125ft per minute ascent and descent. Yay, 42 mins runtime.
Not at all dangerous. Not at all.
Alpinist: a climber who doesn’t use safety equipment. Applicable to divers with insufficient bailout.