It wouldn't matter, as the Op said once: "I could tell the obvious and it would be discounted".
Even though it was capable of delivering 1000% a year?

In relation to your % question, and depending on available capital, and depending on the level of opportunity in the market traded, and depending on the mental state of the trader, the % growth compared with what the "experts" teach should be somewhere in the region of say 50% PA return for a good trader using the "experts" way and anywhere from 500% to 1000% for the few that are fully aware of what the "obvious" can, and does, deliver!