Hi All,
This is interesting.... I don't know why statics on land would be longer than statics in water... could be psychological - I equal times regardless of wet or dry but I have been a swimmer all my life. Its fair to say that if I was sleeping on the deck of a ship and fell in, I would wake up swimming....
Cold water on your face should help the MDR initiate and make your durations longer, but it takes a few minutes with your face submerged (use a snorkel).
It is reasonable to expect all dynamics to be shorter than statics...
About diving alone.. Adolphin speaks the party line. Don't dive alone.
Now for the reality of the situation, if you don't dive alone, sometimes you don't get to dive at all...
There will always be people who climb without ropes, solo, and the mindset is aescetic. As long as they aren't risking others and children aren't waiting at home, its their business.
The best thing you can do if you dive alone is to a) educate yourself very, very well and b) Use your equipment, its your safety net.
Get a D3, get a wetsuit with proper bouyancy weights, get good fins and have your gear kit polished up. Use it all because it works as your safety net. If you are wearing neoprene and diving under 60ft, you can throw off your belt and be on top in seconds....
At the same time there are certain types of gas imbalances that cause instantaneous blackouts. You need a proper understanding of freediving physiology.
You should know that deeper diving than what you are doing has attendant physiological hazards. Be careful.
Since you travel alot you might want to consider taking a course... deeperblue has training available in the UK and if you want to study stateside
www.performancefreediving.com
It is worth every penny and fun too....
I have a house in Kona where some of the PFD courses happen and many attendees are staying with me... PFD courses also happen in Miami and other towns, take a look at their schedule...
Lungfish