Just make sure the leaves are clean and dry and the oil is hot. If you use olive oil be careful as the smoking point is low. They fry up crisp in just a few seconds.
Use tzaziki (sp?) if you don't want them plain...just tap a bit on off a spoon. Easily made with plain unsweetened yogurt, add seasoning like pepper and garlic to the yogurt for flavor. There should be easy recipes online for it.
So if I understand you correctly, Frying the leaves plain as-is will not cause them to wilt when they cook but will cause them to become become crisp? Interesting. I might need to try this. Thanks.