getting out mid-month gives you a small added CAGR boost but nothing much

Then operationally it's probably best to do whichever is most convenient.

For someone who isn't deep into this stuff, just make the timing decision at the normal once-a-month recast day.
This would be people, like son/daughter/SIL etc. that you passed this simple-to-do strategy to.

Some people who _are_ deeply into this stuff, probably have it automated and can get the sell/buy signals as they occur, it is probably okay to sell when the sell is signaled and then wait for the next monthly recast date for a buy signal.

Personally, I have scripts that run automatically every day. The signals are then emailed to me every day or every weekend.

If you have a gap between the sell & buy thresholds, it is unlikely for a buy signal to come quickly after a sell signal.

FWIW, here is the most recent signal (on 6/5/2026):
"NAS100 timing: Timing: IN stocks (+12.9% vs. SMA) (# 56 consecutive weeks)"

We have a long way to fall before we get a sell signal.