TMF
Direxion Daily 20+ Year Treasury Bull 3X Shares (based on the NYSE 20 Year Plus Treasury Bond Index; symbol AXTWEN)
stock NYSE ETF

Idea: TMF calls

I've got a 200% allocation to Long term bonds via margin. Cost basis is around 84. My yield is 5% I've been collecting the dividend yield and selling out of the money call options while I wait for TLT to skyrocket. My margin interest rate is 5.25% so I'm only paying 0.25% On the margined part. I leveraged this way to avoid decay associated with TMF.

Not OP, but TMF comes to mind first, but that’s a daily 3x and I wouldn’t touch it personally

It does seem like most of the portfolio returns are generated from the SCV tilt rather than volatility harvesting.
So it sounds like the TWRR eliminates cashflows. I don't understand the utility of doing this since I'm modeling an accumulation portfolio. It will likely have incoming cash flows for +/- 30 years, so I don't really see the utility of eliminating it.
How will cash flows overweight more recent returns? Isn't the impact of $1 worth more 10 years ago than it is today?
Good point about the date range. The time data was limited by AVNV or whatever the newest fund is. When I model it with older funds, it does show a near zero correlation between LTT's & equities. I'll probably throw 5% in LTT's because I expect a good deal of volatility upping AVUV from 20%-25% plus a little bit of AVDV as well. I'm relying mostly on the SCV premium, but understand that for some time periods, adding LTT's actually beats 100% equities, but I have to cherry pick the data. It may just be more of a behavioral ballast to help with periods of likely underperformance.
Now you have me curious about levered portfolios. Do you not like LTT's in a levered portfolio? I thought that TMF was essentially a given in any levered portfolio. Thanks for sharing your thoughts with me.