If practice is boring you aren't practicing properly, or are just playing the same old line over and over, or just are needing a break from the
game.
First practicing on a house pattern is hard if you want to learn to play different angles and still score, the key is don't worry about the score. Some of the more extreme angles just are not going to carry well on a house pattern so play these when you are working on your spare
game as you will leave more spares to shoot. The key here is to keep the
ball in play and make subtle adjustments to carry better.
When playing the twig on a house pattern you should use your spare
ball because the oil is so light outside the 10 board on most house patterns, if you are lucky enough to have a house that allows you to use modern equipment outside then stay in one spot as long as you can then exhaust every adjustment possible to stay in the same place as long as you can, then move in and try to find a line to exploit the dry boards you just created and then move again deeper and get the
ball out to the same point and stay there for at least three strikes in a row to make sure you didn't get lucky or a fluke strike before moving again and still get the
ball out to the same point.
When you are working on fundamentals, concentrate on just that one aspect of your
game, then quit when you lose concentration, stop practicing you are done, staying past that will incorporate bad habits into your
game so know when to just walk away then come back when you have a fresh attitude toward working on the same aspect of your
game before moving on to the next.
You shouldn't try playing different lines until you are sound fundamentally, playing different lines when you are tripping and stumbling your way to the line with bad timing and a poorly fit
ball isn't accomplishing anything, work on fundamentals until you have a properly fit
ball, a repeatable approach and several consistent release options before playing all over the lane. Sucking from the 5th arrow is the same as sucking from the second arrow.