tedwhiteva:Alternate air source - does that mean pony, or Octo?
Traditionally Alternate Air Source = Octo.... there's a few old sea-hunt die-hards still running around w/ (original) double hose regs & j-valves trying to squeeze every ounce of use out of their rig....
@ 130', if you are not solid w/ your air consumption - a pony might not be a bad idea.
I don't like the bit about 'tech' dives being special and additional cost. In reality - the bulk of the 8-10 hour trip is travel time. If I'm going to spend ~$150 & the day getting to and fro - I damn well am going to take my time on the wreck - not just pop down for 10-15 mins and back up. The bulk of the wreck is under 130', and technically - all dives are decompression dives. If I keep my RT to 60 mins, they should be more than happy.