These, of course, can be fried in regular cooking oil as well just like regular french fries.
My grandmother used to cook these and occasionally, my mother would. I've continued to make these on occasion, but I use an electric slicer as these do not slice as easily as regular white/russet potatoes.
If one is going to fry instead of bake, 20 to 45 minutes in cold water should be enough - if one uses this soaking method at all. My mother and grandmother never bothered soaking them half the time and they still came out great, but soaking will remove additional starch so it's not a bad idea of you have the time.
Whether one soaks the fries or not, crispiness can be achieved more easily by allowing an initial 3 to 4 minutes for the frying, and then removing/draining the fries and setting them aside to let them rest for 3 or 4 minutes - lowering the oil temp briefly as/if needed. Return the fires to the oil and cook to completion.
These (sweet potatoes), I would suggest paying attention to instead of walking away, as there can be a briefer period between too soggy and too crisp. There's a golden zone when oil cooking, otherwise you have sweet potato chips (crisps - i.e. they are crunchy) instead of fries.
Salt to preference if desired - maybe use kosher instead of table salt for a bit of variance if you add salt.
Women don't owe men anything. Not a smile. Not sex, Not even empathy or compassion. Men don't owe women anything either. Not interest. Not resources. And definitely not commitment or children.
Somewhere in a lonely hotel room there's a guy starting to realize that eternal fate has turned its back on him. It's 2AM.
So, I'll Do It - I guess there's nothin' to say, its all been said
I'll Do It - Make sure you want it this way, 'cause when it's done this time, I'll be gone