Thanks! I like the same play on ETP as on EPD and KMP. There has hardly been 1 EX in the past two years that has not shed approx 3.00 post EX within the next three trading days, from the pre-EX high PPS. There's your double on the PPS-1 strike for the Feb Put. Watch out for the adjusted options on the Feb contract.
The other interesting item on ETP is the low date post EX. It almost always(85%) falls within the first 5 trading days post EX. The low being most often on the day after EX and the next most common on the 5th day post EX. This has not been true in only 4 Q's going back to 2009. So I am thinking to sell on the close of one day post EX, if I have my double. If not close with profit/loss on the close of 5th day post EX.