Will not suffice - crampons MANDATORY as previously stated. Lived the main trail one week ago. The chute is not to be underestimated. Please see my post from earlier today in another thread in General Discussion. BTW - current guidelines are to leave crampons on during glissading (unless obviously not required, Freedom of the Hills is outdated). I put my crampons on MID CHUTE due to a slide last week. Please be fully prepared before attempting Whitney this year in these conditions!