[Paddlewise] Guide training?

Is there a specific regimen of training and assessments through which 
interested sea kayakers work to attain guide certification?

If there are various certifications, which is the most valuable in terms of 
learning the best kayak seamanship? In terms of guide employment value?

Has anyone on the forum attended guide schools in the northeast USA? I live 
in southwestern Maine. Would you have any recommendations?

Thanks in advance for your advice!

Tom
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