I used to have the same issues sailing the old Impulse dinghy (a 12' cat-rigged rocket-ship) in winds that I really shouldn't have been sailing in...
It took a bit of practice, but the basic technique was to make your less-than-gentle turn on the top of a wave and hike out the stern (literally over the stern of the boat) as hard as possible
easing the mainsheet at the same time.
With the bow pointing skywards, the boat would then literally launch itself off the top of the wave you were on, skip off the back of the one in front and away you went on a "Screaming Reach" (the wind is screaming, the boat is screaming, you're screaming!..).
On a boat with a jib, it's a bit more controllable than it was for us: Pull in hard on the jib as you make the turn to depower the boat a bit, wait for the wave crest and then let it out to go flying. Timing is everything, but it's awesome fun!!