I was out 10 yrs.I got IFR current and went into a multi-SIM used for awac interviews.the guy team me thru a tonne of approaches, especially ndbs and se stuff....that helped.I also already had a lot of motion SIM hours...that helped.
Note: have been flying about 20 years, and never did an operational ndb approach, but did a LOT in training....In the aircraft or SIM.