If the TGP is SOI (you dont need to do any kind of locking), slewing the TGP also slews the CCRP solution. You can use the TGP to drop CBUs quite accurately too.
I tend to bring a TGP for most AG missions, because the limitations that apply to it dont exist in BMS, so there is no down side to bringing one.
I should give that a shot, will do that next week.