My house was built prior to 1940,(closer to 1920, I think). It has gable vents at opposit ends and 3 hips. The roof is relatively steep (5or6 in 12) I would guess. The eves extend almost 2 ft. from the house.It suffered significant damage to the roof during hurricane Ike(two pecan trees went through it). I know that current thinking is to install ridge vents with soffits under the eves. The problem is, trying to retro-fit the eves with soffits would be extremely difficult. My thought is to accomplish ventilation by opening the remaining hips and install a cupola similar to an Amish barn. I would then install a solar powered fan in the cupola to facilitate drawing a draft through the attic. Does this sound like a reasonable alternative to ventilate my house? Any thoughts on this would be appreciated. By the way, I live on the Gulf Coast near Houston, TX where the summers get extremely hot and humid.