Guys
the shoreline straight from the steps at scuba seraya is volcanic sand for about 20 feet then its into the water and round boulders / rocks and pumis.
full foot fins are worn by nearly all the dive guides but they have feet like leather.
I preffered to dive with booties and open heel fins
A really good option is a pair of 2mm neoprene socks and full foot fins (that little bit of beach gets really hot in the afternoons)
If you can get "Semut" as your guide you've hit the jackpot, the guy is a genius with eyes like a microscope and he will work really hard to find you what you want.
I did a total of 4 weeks at SS last year and did over 60 dives, I'm glad I had booties for all of them.
no matter what you wear you're in for a treat, the place is amazing
Have a Bintang for me
Nige Wade