You can do a whole lot of simulation during any dive at any depth and there is no need for the punishment to your sinuses. Yes it does get more difficult in the last 30', last 20' but I'm not yo yoing no way!!!
40-60' depths are great to stay within working on tasks....
This is just an impression I get from some folks - they make so much out of things and it just seems to me it gets in their head too much. Get great at individual tasks at anytime during a dive - get fantastic at them - get so good at them that they become second nature and you don't think about them - know where you have things stowed or clipped. Where is your upper right d ring, your lower left - don't feel for it - move your hand directly too it. Light change, smb deployment whatever - you should be able to do those things while cooking dinner and reading a book - do you think about walking?? You don't and these simple individual tasks that might need done, you shouldn't think about those either.
Touching a dring, unclipping a spool - do those all the time and get that to become second nature becuase then when you have to do three things at once while holding at 20' becomes easy.... It really does..
40-60' depths are great to stay within working on tasks....
This is just an impression I get from some folks - they make so much out of things and it just seems to me it gets in their head too much. Get great at individual tasks at anytime during a dive - get fantastic at them - get so good at them that they become second nature and you don't think about them - know where you have things stowed or clipped. Where is your upper right d ring, your lower left - don't feel for it - move your hand directly too it. Light change, smb deployment whatever - you should be able to do those things while cooking dinner and reading a book - do you think about walking?? You don't and these simple individual tasks that might need done, you shouldn't think about those either.
Touching a dring, unclipping a spool - do those all the time and get that to become second nature becuase then when you have to do three things at once while holding at 20' becomes easy.... It really does..