Donna,
I don't really watch IV on OIH too much as it seems to move in waves, mainly staying in a 10% range. Not like my GOOG play a couple of days ago when IV was huge just before earnings (but that's another story)
My focus is on Delta and having a positive spread for as long as possible. I keep an eye on my Short when that Delta passes my long, then I follow it a bit more. I've been following oil for almost a year now and feel fairly confident on what it's moves might be. I just feel more comfortable with its fundamentals vs. a single company, too many variables! IMHO
You are right with regards to the slow decline in my OCT, but my plan of attack is to roll that forward around AUG to a MAR, before the erosion starts to pick up, but it also helps when I'm deep ITM, most of it is intrinsic.. Sometimes what I have been doing is closing out the whole position to realize the gains, then move the long several more months out etc etc. I should also mention that the OCT is from the previous mnth, so I've reduced it's cost a bit from APR. This strategy isn't too exciting, but its simple and easy to follow, so hopefully it helps others just starting out.
I think you're right about OIH being a little high, that's why I was considering selling the MAY 160's, I just need a $3 drop, but I wanted to play a little bit with the strategy. I've been mostly doing Call Calendar's as I thought OIH was just going to run until summer, which it has, but I think it's gone a little too fast. Your PUT you talk about looks interesting, I'll think I'll take a look at it. You say net Debit of $4, OCT 155P $21/ MAY 155P $11, where is the $4 coming from... sorry if this is obvious and I'm not seeing it.
As for software, I just use some simple position analysis and look at possible outcomes. I should probably use more, but things have been going so well that I really haven't dug deeper. I'll be honest I'm not a Pro, I just sort of chip away.
No, I don't work in the industry. Just a close follower.
Let me know if you do the PUT Cal. I'm interested to see how it works.
Jason