I have the feeling you're asking the wrong question. What I think you're saying is you want maximum exposure to a bull market without the requisite exposure to a bear market. What I hear is you've poorly managed risk. That's a good way to gloat to me about your thousands percent gains and turn despondent when it became a $0 balance.
My entire time investing and trading has been spent trying to answer this question. The short answer...the most effective way is not to. By which I mean, don't leave profits on the table during good times, and be ready to tolerate bad times (by sensible risk management). Basic risk management type stuff--don't over leverage, diversify, don't assume risk you can't tolerate...You can control risk, you cannot control reward.
So many people on here sing the praises of compounding trading gains--but the flip side to that is you're now exposed to losing not only your original trading account balance, but also the gains. I address this by only leaving 20% of my gains in my account plus the float I hold for taxes (until 12/30...then I harvest interest on it until 4/15). The remaining 35-40%, I move over into my investment account and make prudent investments. If I have a big loser that wipes out my account, I'm usually still have a net gain for the year and I just stop trading until I have the cash to fund it again (I never move investment gains into my trading account).
One of my biggest (and most expensive) lessons was position sizing. I try to keep my position size consistent throughout the year, and use gains for additional positions of similar size (see how this hits directly on diversity, risk tolerance, and compounding?). It's only when I add cash into the account (usually November of December) that I'll increase position size for the following year to match my diversity requirements.
Finally, I keep my positions relatively balanced with at least 1 long put position (10-15% of account value, usually), at least 1 long call position (again 10-15%), and the remaining 70-80% in bear-neutral or bull-neutral positions (read: credit spreads). That way, when it hits the fan, the long put usually goes way ITM and subsidizes some or all of the losses across the other positions.
Even if every single one of my trading account positions moves against me in the worst possible way, I'm never exposed more than about 60% of account value.
I find beer to be a nice hedge against a bad day in the market.