I suck too, but some of the people I play with used to be worse-alot worse.They eventually got a little better but i get annoyed at times too still. I think instead of EVER giving them another tip just say get lessons - a few times of that and they'll stop turning to you time and time again for advice. You might tell them about this site or a rules site casually and hope they catch on. If you want to ditch them just say you want to play by yourself for awhile to get your game more together, they'll understand. Just make up whatever you have to so you can cease any kind of obligation and that way your not gonna alienate yourself at work. Your not a bad person imo golf is frustrating enough without having to deal with noobs on top of that, don't feel bad for wanting to have fun.