Start Date

Hi

We are going to implement Meter based PM (Interval -Service Hrs).We are in process of setting up and testing Meter based PM's.We are already using day based PMs with set  up of Projection start date method=1 Sample Amount =365 and Date-Projection From ="1".I would like to know if we can set Projection Method (Projection start Date method) UDC-13/PM, as Sampling Readings (2) or is it ok if we set Sampling Days (1) or Percent Due (3) for Meter based PM in Maintenance Rule ? What is the best industry practice ? Also we need to set Sampling Date, currently we are thinking to use 365 days  and Date- Projected From "1".