Currently on the SPY system I have an allocation of 60% SPY on the first entry and 40% SSO on the 2nd entry.  However I'm considering adding a 3rd entry for rare times when there could be a third entry.  Perhaps an allocation would be 60% SPY, 30% SSO, and 10% UPRO for the 3rd entry or better yet near the money options.

Here's a performance snapshot of the system if one were to trade 60% SPY, 30% SSO, and 10% UPRO on a 3rd entry.  I don't have options data obviously.  also here's some images of past times showing when the system would have taken a 3rd entry.  

the first stat shows a TS report with 60% SPY on 1st entry, 30% SPY on 2nd entry, and 10% SPY on 3rd entry.

the 2nd stat shows a TS report with 60% SPY on 1st entry, 30% SSO on the 2nd entry, and 10% on the 3rd entry.  Obviously makes quite a bit of difference, 599K vs 735K.  again I have no easy way to simulate past option trades so I can't show what the effect would be if one were to instead of buying UPRO for the 3rd entry buying Options instead, but to me that would make a lot of sense for the leverage.

the other images show times when the system would have had a 3rd entry.  Again as you would expect 3rd entries are rare, but it's in those draw down times where it's nice to have a 3rd entry