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Thousands of dives past 130' on air or lean nitrox. Often requiring quite a bit of exercise, amazing what being still a few breaths can do to bring you back into focus. Dozens of friends with the same experiences. To 240' on air a few times including once with a guy on mix who let me breathe...

There is a rash of " how I finance my diving " posts on the FB group SDU. Many are hilarious or completely inappropriate but divers really do make up an interesting cross section of occupations.

It all depends on the valuation you put on your time and how much usage the compressor will get. Some people don't get the concept that there are others whose time is valuable enough to make home compressors viable even at seemingly outrageous costs. Do your due diligence and don't settle for a...

I don't know how well that would fit the definition of " moderate " duty. It appears to barely fit the word " light " duty.

Talk to the Captain of the shark tooth diving boat, he will likely have connections in the local community.

So a typical wetsuit isn't effectively a full body compression sleeve? Or at what point could it become one? DAN's sounds like there is a bit of CYA factor involved, understandably.

While I agree there is tendency to overestimate abilities inherent to certain people I detest the use of the D-K effect in conversation as it's usage isgenerally associated with condescending and patronizing Richards.

If it's not a war grave and in saltwater I don't care who takes what. If it has treasure on it and not a war grave I'll just post up the coordinates on public forums and the authorities can kick rocks finding every little piece the flock takes off it. I find the idea that any foreign power...

I have 56,000+ for the Atlantic coast of the US from the Keys to NC. I have dove probably 4000 individual sites and confimed several thousand more via my personal side scan or US government gathered multibeam and sidescan. Any list you find will be limited. Some significantly. I do like the...

Hydraulic can be done and I've ran boats with them but it requires a constant rpm from the main engine which is a pita and burns a lot of fuel compared to a separate diesel or running electric off a bank. Same for running it off the flywheel on front. Motor has to be at a constant rpm for the...

Alternator will unlikely be able to keep up with demand. Figure roughly 1 hp per cfm. 745 watts continuous per hp. Best if the battery bank and compressor are close to each other.

I have a close friend who is an actuary, he tells me relative risk isn't rocket science to quantify as it is the business plan for all insurance companies. Diving is probably not even top 10 most dangerous as a hobby. All the sky sports will come first, followed by people attempting to propel...

My lionfish take totals are in tons, that's a lot more effective than pretending my just being there isn't affecting anything. The mere act of getting to site should be considered consumptive.

I took that.

Meh, I just can't be bothered to try that hard to save when it's simpler to adjust my income rather than my spending.

Watch videos of some of the better spearfishers in the area on the utubular. The internet is full of questionable advice on just about every topic. Watching someone do it well on video is often the best explanation.

Have friends who went there. I wouldn't based on experiences they related concerning regular drug and alcohol abuse by fellow students and other sketchy behavior. One of the guys dove for me for a couple of years and it was a frequent topic with guys wanting to transition from spearfishing to...

The Kohler and Yanmar engines are far more than parts for running it directly off the main. But it does give you more flexibility. Even Chinese knockoffs are a few hundred. I priced replacements for mine at 2 to 3 $K and would definitely get knockoffs.

Yanmar was strictly for the compressor. Sorry, I have no recollection of the model numbers for the a/c clutch but they needed to fit the shaft of the pump being driven. Lasted several years in a relatively dry bilge.

You'll need to size your pulleys appropriately for rpm when using direct drive. And they really don't like varying rpm as mentioned. We used timing lights to tune compressor rpm.