Keel/Heel
The keel will keep you in the water, that is why it is so heavy. In most boats you'll find that half their weight is in the keel - it keeps you from tipping over - trust it. Sure, you can find stories about "knock downs" - which seem to inevitably occur to people in the middle of the ocean with big winds and too much sail. As MG stated - the sails are your throttle. If you feel like you are getting overpowered, just let those sheets out. Too much heel is bad only because you are sailing less efficiently. Also, you'll note that heel tends to be related to your point of sail. On a run or beam reach, there will be little or none; close hauled will produce the most pronounced heel.You are not alone - my wife's sole angst with sailing is that it is too "tippy." With her, I spend a lot of time underpowered (little sail) and on broad reaches. Until you are used to it, that sudden gust of wind and the heel that comes with it can be very disconerting! For me, on the other hand, the heel makes me feel like I should be on the cover of Sail magazine, soaked in salt spray, bow into ten foot swells - then the little girl on her water skis passes by and reminds me I'm sitting on Big Bear Lake. Enjoy!