Using a Home Built Tagging System in Contacts?

i have tried to use ken of my own home built tagging system in contacts, where you go on the notes filled and just put hash. And i do occasionally run into problems, and thereare various problems. Sometimes it just doesn't work, and i'm not really sure why. So i just manually create these groups. It is not that hard. If you do a search and you have an existing tag system, you can create a manual group and just copy them in with one drag. Then you know forever exactly who is getting what. Ye, i like card hop on io s forthis because you can tap and hold on a contact and just select the groups right there. Am