Re: Tacking in heavy winds
Generally you can't go above close-reach with just a jib unless it's a genny extending way aft of the pivot point/CLR. So, definitely not with just a little storm jib that's way forward of CLR.
I guess you could tack with the motor helping, if the prop would stay in the water.
But again (and this is what you asked I think) you'll be sticking the tiller way to leeward just to hold course above a reach. Lee helm, big-time. Your rudder is acting more like a brake than a steering device.
So, don't tack. Or, don't use jib alone, put a very reefed main up at least, or in a real screecher, a storm trysail.
Or (thinking imaginatively here), maybe drop a small sea anchor off your windward bow, let it pull you around, then heave it back in just as you finish the tack, before you accelerate and can't pull it up at all.
Never mind, forget that last one, stupid idea, more theoretical than practical. ;-)