I've turtled my 16 many times and my new 17 a couple of times solo. Each capsize was in significant wind (15+) and 2-3 ft waves. I found that turtling can actually be a good thing. The boat is very stable when turtled, after all you have a 27 ft sea anchor under you, so take your time and get collected. Make sure that all your sheets are released and not fouled with the hiking stick. Also make sure your main traveler is all the way toward the leeward hull. Grab your righting line and stand on the leeward hull near the middle and lean back, and wait, and wait, and wait. It will seem like nothing is happening, but eventually the boat will come up on it's side. At this point I employ a righting bag (a modified large dry bag with a 4:1 tackle) to finish the righting (I store the bag under the tramp, secured with quick release buckels). As far as your 2nd question, I'm just over 6' and have no problems reaching the line. Hope this was of help
I have righted my H-17 many times, solo, no bag, extender, etc. At 6ft, 2in and 190#. The stronger the wind, the easier it is to right. Wait, Wait, Wait, the wing acts as a damper, and slows the process. Always grab the dolphin striker as the boat starts to right. This will prevent cartwheel, and also allows the boat to rotate into the wind. It is normally easier to climb back on the boat over the stern.