The best way to use those signals is to use them in combination, and to scale in or out depending on your tolerance for short term loss.
For instance, it would be no more recommended to go 100% to equities (or your preferred maximum equity allocaiton) when just the NH/NL flips to bullish than it would be to get completely out of equities when one of them goes bearish.
NH/NL is the shortest term indicator of the 3 and is the most subject to whiplash (we’ve already seen it happen 2x this year). Usually the SMA trend is the more medium-term, and DBE / 99Day is the longest one. Playing it safe, one might choose to put in 1/3 of the planned maximum equity allocation with the NH/NL flip, 1/3 with the SMA flip, and 1/3 with the 99D flip.
The general lesson from all of these backtests is not what we might expect. The most critical element? Minimize fees - don’t use high-fee mutual funds. (Meb Faber, Ben Carlson, others have issued research papers on this recently).