Land anywhere within gable markers
Okhira, I have been landing off the seal for many years. If its your home field then you should know the surface.
If you are using an unfamiliar field then care should be taken, maybe have a low flyby or perhaps don't even risk it.
Most fields I have seen are ok off the seal but there is always the odd one which will catch you out.
Don't ask for permission as a refusal may offend.