Circa one month ago, when I wasn't bowling like a hack, my bowling off a standing start was extremely poor. I wouldn't get enough power behind the ball, but my full run up provided the energy and follow through required to put the ball in a good area.
Now situation has reversed. I'm bowling extremely well off a standing start, getting loop and putting the ball in good areas. However, when I come off my full run, which hasn't been altered consciously, my bowling action feels foreign and the ball is more likely to hit my foot than a good length.
This is obviously problematic because in a game I bowl from my run up, and my good bowling from the runup is still better than my good bowling from a standing start, just because there is more energy and momentum to work with.
Has anyone got any idea what this could be caused by, or any remedial practice I could do to repair the problem?
I'm curious to know why if you were bowling ok off a full run, you continued to practice off a standing start?
Standing starts are used by coaches to teach young bowlers (typically age 9-10) who are learning to bowl for the first time and have not yet learnt the basic movements of the bowling action, but they are of limited use beyond that - in fact there is evidence to suggest that the different rhythm they impose on your bowling action can cause you to lose your full bowling action - which is what sounds like it has happened.
Standing start should NEVER be used over a full 22 yards, as this puts far too much pressure on your bowling shoulder. At most, you should be using it to practice the release of the ball out of you fingers over max 15 yards.
I would recommend you immediately drop the standing start bowling, and focus on bowling from the same consistent, rhythmical run-up that you intend to use in games.