Last year I bought the bottom of the S&P500 at 1832 on August 24th 2015 with a tremendous amount of leverage in relation to my typical trades. The bottom for the day was 1832. That was a successful one.
A failed bottom fishing attempt was when I bought US oil at $28 per barrel in February with heavy leverage. The bottom was 26.02 - but got stopped out at 27.
The alternative is to simply bet less and keep stops wider