I have small feet (UK size 3 1/2; US childrens size 4; Europe size 36 1/2) and have had a lot of trouble in the past with my fins coming off during dives, no matter how tightly I pull the straps beforehand. I now use children's full foot fins, but really would prefer bootees and strap fins, think it's safer.

Has anyone else had this problem? Could anyone recommend the best fins for small feet? Would appreciate advice!