Probably my biggest concern is inexperience in confined area. I have often been less than impessed as an examiner when examining PPL's.
After all what is the ppl going to do with his brand new licence yup take it home. Realistically CA is done at my place starting with small fields ending up in clearings in the woods. You only need land owners permission if you touch down. Providing you are 500 ft away from person, structures vessels etc - no problem ! Also I think one may be infringing the law if one landed - definition thing of stsrting and ending from a licenced field !
Instructors out there please teach your PPL's proper confined areas - thats what the damed thing was designed to do !!!!!