There are very few ways to avoid getting straight in on shots. Rabbits feet help if you keep one in your left pocket. Horse shoes can also help, I recommend just riding a horse to the pool hall and hitching it outside, that works well enough and keeps you from lugging a heavy piece of iron around, plus you get 4 times the anti-straight effect. Also what are you eating before you play? Lucky charms cereal is often thought of as the top meal for producing angles in pool but I tend more towards the natural foods without all those preservatives, if you know a good patch of 4 leaf clovers then I reccomend making a salad out of them and chawing on that before the match, it will definately help keep those straight in shots at bay and on top of that help keep you regular.
If this all is not enough and you still have those straight shots creeping up on you then you need to resort to desparate measures. Keep a roll of pennies with you at all times, when straight shots are still plagueing you take the pennies out of the roll and throw them into the air over your shoulder (dont worry, the rabbits foot should stop you from pelting a big guy with them) and then go about the room collecting the pennies. Make sure you call a timeout before doing this. Once you have found all the pennies you can start playing again and be safe in the fact that straight in shots will not happen again for the rest of the night.
If this all is not enough and you still have those straight shots creeping up on you then you need to resort to desparate measures. Keep a roll of pennies with you at all times, when straight shots are still plagueing you take the pennies out of the roll and throw them into the air over your shoulder (dont worry, the rabbits foot should stop you from pelting a big guy with them) and then go about the room collecting the pennies. Make sure you call a timeout before doing this. Once you have found all the pennies you can start playing again and be safe in the fact that straight in shots will not happen again for the rest of the night.