Skin on, we always called steak fries.
Double frying fresh potatoes is best.
Fry them then remove and let them cool. They will not fully cook the first dip. After letting them cool, fry them again to brown them.
Fry time will vary depending on the size of the fries. he he...that rhymed
If you google it you should be able to find videos.
Sorry, I thought you were deep frying thick cut fresh french fries.