Here's an interesting long bet: Warren Buffett has bet $1M that the S&P500 will outperform hedge funds over a 10 year period. http://longbets.org/362/
For instance, if you ran a fund that simply bought BRK shares, and, each year, bought just enough out of the money options to protect against a %10 decline in BRK, that would be a hedge fund. Buying the puts is a hedging position, but I would say that such an investment would be damn conservative, and certainly in line with Buffett's investments strategy. (He cautions against derivatives, but covering a long position with puts isn't what he means.)