I think viewing it twice sounds like a good idea, but I understand the surrounding roads get quite busy. I will be happy with just the once.
The tides are particularly high this year, due to a particular alignment of the moon. So there is apparently a 10 years high.
You also have to be careful because sometime it goes over the banks and floods cars. There is a Toby Carvery there as well so hope to take in breakfast as well.
There is plenty on Google but none of them are particularly specific.
Seems the best bore happen with tides over 31 feet but 20th Feb tide is estimated at 43 ft. The highest on Friday is in Canada at 52 ft.