You have got to try it first, I have caught conger close to 100 lbs and even that pale into insignificant when you hooked into a big common skate, the fight will generally take around an hour, in that hour, you will experience high (when you finally got it off the bottom) and low (when it take line and go back to the bottom and stays there), and high and low, .... I had it up and down 3 times before it stayed off the bottom.
The feeling of helplessness when it wants to go and all you can do is hold on to your rod and pray it doesnj't break.
It's one of those experience that will stay with you for a long long time.