Yes, it would be difficult to find a particular sailor with the experience you seek. The wiki (World Cruising and Sailing Wiki - a Cruising Guide on the World Cruising and Sailing Wiki
) will hopefully someday have the sort of info you want.
If you've already sailed w/o aux engine, then you are already fully aware that every day, every season, every tide is a different experience to sail. I do agree that getting in touch with the local yacht clubs would be helpful to your cause.
One note on that whole "sail a small boat w/o aux engine" theme--I have a friend who had sort of a mid-life crisis and he decided to build a folkboat (sans engine, probably something like 22-24 ft), and do everything the "simple" way. So, he builds his boat and sets out from somewhere North (I believe he may have been living in Alaska at the time) for a sail to the tropics. By the time he's down along Vancouver Island he's been whipped around whirlpools for hours at a time because, well, once he's been swept into one he has to wait for changing tides for the chance to pop out since the sailing alone won't do it. He stopped there along the island, built himself another boat (this one a trimaran of about 30' because he found the folkboat too small and he personally had "issues" with heeling it seemed) with a good strong engine and then he continued on down the coast to So Cal, across to Hawaii, and ultimately back to Vancouver Island. He states that he really never needed that engine on the tri --except when he was around Vancouver Island and on the Columbia River of Oregon!
Good luck in your adventures, please do let us know your plans as they come along.