Just go slow up the cone itself - take breaks every 25-30 meters to turn around and look at the amazing view. Husband and I did it on a whim - not experienced hikers and not used to the elevation (we live at 30’ about sea level). Took about 38 minutes to amble from parking lot to cone and then 30 minutes to slow climb up it. Spectacular views. Was windy and cold up there. Would do again. Fantastic.