DB, this is the thing when we approach to non radar airport and fly procedurally. It's easy for pressurized aircraft to descent deeply with big rate of descent but I'm on non-pressurized A/C and cannot descent that deeper.
Of course holding pattern is published at IAF and we request hold and cleared to hold there. I think It would be bettter off adding the reason after " request hold" to improve situational awareness for both pilot and controller.