HI Lisa,
Sorry cant help you with that one , we went through Sandgate three years ago having driven through Folkeston on the way to Hythe, what a nightmare that was ( Folkeston)vowed never to drive that way again, I found using the M20 from junction 13 to 11 was much quicker.
We were going to walk along the sea front from Hythe towards Sandgate but ran out of days.
Royston