Lots of attractive ways to get short TSO, either outright using the shares or synthetically using option/stock combos. I personally like backwards ratio call spreads (selling at the money, buying out of the money, 2:1 ratio) out in August or later. For example, sell 2 august 60 calls at $5/contract, buy 1 august 65 call at $3/contract, net credit of $7 that you keep if TSO is below $60 by aug expiration. A more conservative approach would be a 1:1 ratio of the same trade, net credit of $2/contract instead, but would cap losses at $3/contract regardless of how high the stock runs.
Eat your hearts out bears. This thing is a work of art if you want to get short.