It's a risk
No matter your skill or experience, strange and terrible things can happen to you and your boat. The foam is there to float your boat in a worst case scenario, either right side up or upside down. In either posture, you have something to hold on to, and make a bigger target for eventual rescue. I properly loaded and secure boat with the aid of the flotation foam can be righted when conditions are calm and sails are removed.Some have said they have removed some or all of it. I suggest you think carefully before althering placement or amount. You might consider doing so if you find yourself in any of the following categories of sailor:1. Always have a dinghy in tow2. Have a compact, fully equipped life raft on board.3. Never sail far enough from shore that you and guest of any age can't swim easily to shore no matter how cold or violent the water is4. You just don't care about yourself or crew.