There's a special mode in promod (the competition mod for CoD4) that allows you to practice grenading and find good spots for grenades. This is something you guys really should try out, maybe just spend some time getting your nade throwing techniques right.
How it's done:
1. Start up CoD4
2. Go to Mods and choose promodlive204
3. Launch the Mod
4. Start a new multiplayer server on the map of your choice.
5. Open up your console (`) and type: "/promod_mode strat"
6. Hit enter and start lobbing 'nades around
To return to the normal mode, type in console "/promod_mode match_mr12"
A few of us were playing around with it last night, I think it's a great tool and it definitely helped me PLENTY when I was still learning the ropes of CoD4 (back then this mode was a separate mod, but it's now embedded in promod), especially for those that are new to the CoD4 pace and style of play. Give it a shot
