We did a bit of this last year....the best one was a three night/four day to Hunstanton, off road. We used parts of the peddars way and icknield way. It was all kinds of awesome, with wild camping in woods, found along the way.
I used a hammock and tarp, which is very comfortable and keeps most of the small bitey things out of my face, whilst keeping off the spidery things that mooch about on the floor.
I tried to pack very light, using alpkit dry bags strapped to a carradice bagman at the rear and underneath the bars on the front. As I hate having anything around my shoulders, I used a northface sport hiker large bumbag thing for all the quick access stuff plus extra water bottles....it all worked very well.
The hammock and change of clothes are on the front, the doss bag and toiletries are on the back.....
It's a great way of being self sufficient, without having to worry about reaching a specific place, at a specific time......if you see somewhere to have a paddle, you can stop for a bit if you like!