I have no idea about fishing the Med however, float fishing from the beach can be difficult if there is a current (does the Med have one?). The float just does not stay long enough before it is washed in. You can try casting out as far as possible with just a weight on the end. Then clip a float link over your line and let it bungy down the line until it settles in the water. This does hold it in place. This works better fishing from a jetty, the higher up you are the more momentum for the float rig to slide down. From the beach you can clip the float rig on and hold the rod up. Bear in mind if you cast the weight out 100 yds the float rig will only settle 30 yds out but, the higher up you are the further the float rig will go . The other problem is you have no "strike" as the line just pulls through the clip which is attached to the line. However, fish do hook themselves especially hard hitting fish like mackerel and bass. But, you do have to reel the line in until it hits the weight. A live sand-eel on the hook works well, failing that a dead one but, a prawn or shrimp etc could work.
I have used this on English beaches and caught fish on it. Mackerel - but any bass, bream about may go for it. Mullet would be hard to strike the hook in but, you can get some traction with a side swipe.
Not the greatest method to fish and to be honest it was mainly for me when fishing a jetty with lots of anglers on it. Me being a float nut and not wanting my float to drift into other anglers lines and being lazy, it does allow you to float fish without the tide washing the float in every five minutes. Just thought I would put this in to give you something to think about on the chance it may appeal.
Another thing I used to do was set up a beach caster with a weight and a paternoster hook link. But, attach a float two thirds along the length of the paternoster. This is not float fishing as such because the float is under the water, but it keeps the bait off the bottom away from crabs and it allows the dead sand-eel or prawn to waft about in the current just off the bottom and look "alive", which is far more attractive than a dead static bait lying on the bottom. However, it would tangle on the cast so I used to use some of that dissolving string to tie the float etc to the main line. After a few minutes the string would dissolve and allow the float and bait to separate and present nicely as described. A bit of a palaver setting it up for each cast but, again ,just some food for thought. You may think of a way of having the float on the surface if the water is shallow with this method-All the best.
PS-using a red float for the above method-fish are attracted to red and if they don't see the bait first they might see the red float wafting about and investigate and then see your bait wafting about behind it.. Works better in a clear sea, murky sea not so good.