HU match raise/reraising optimal frequencies

[maxpowers21]

I was wondering what some of the answers/reasoning to some of the questions would be for how often one should raise preflop in a HU match, say 1-2 blind structure, with the SB on the button?

SS2 jenny harmon says one should raise roughly 75% of the hands from the SB heads up.

So how much would the BB reraise to counter this super aggresive strategy, or even if the SB was raising 90% or higher of these hands? I'm guessing one would have to reraise quite freqently from the BB to avoid getting run over in this type of HU match. Thoughts?