Then just let the aircraft "ride" the storm, doing the minimum to keep roughly S&L.
Not trying to teach you to suck eggs nut do you mean 'fly for attitude'. Select the minimum power speed and hold the attitude letting the airspeed and altitude wander on the basis of what goes up will come down and vis versa.
I was told this in the Carribean by the crew of a Constellation whose job it was to fly into hurricanes to find the core; this was before the days of satellites. They said that if you stuck to those rules you could not go far wrong.
I have flown helicopters a lot in the tropics, Belize, Borneo, Malaysia and China and several times I have had to, or, at night, inadvertently flown into some fairly violent clouds and that plot seemed to work out all right.
The greatest gift in those circumstance is weather radar. Sometimes you hold, sometimes you fold, sometimes you flee.