I have used a Thermarest Basecamp for years.  Too heavy for backpacking  Lately I have added another lightweight pad on top of it.  My brother's dog punctured it last trip.  The light weight pads are kind of flimsy and expensive. 
For gravel beaches I got a 2 pound Thermarest cot. A little hard to set up but very comfortable with the pad on top.
				
			For gravel beaches I got a 2 pound Thermarest cot. A little hard to set up but very comfortable with the pad on top.