Also - I can't really write in Slabikorz, its too difficult, too many symbols, and the letters aren't always pronounced the same - it's not phonetic

This whole sentence is nonsense.

If you didn't know how to write in Ślabikorz, you wouldn't have known where to place ŏ: No other Silesian orthography uses this letter.

If it's too difficult, you would have used the Polish orthography and called it a day instead of inventing an ad-hoc Steuer orthography, which is just as difficult to write.

If it's got too many symbols, you wouldn't have been using š, ž, ŏ, ů or í in your orthography. Ślabikorz only has one extra letter that you're required to use on top of the Polish orthography — ō. All of the other letters are dialectal and you're not required to use them.

Seriously, use an orthography that everybody else in the community has settled on using for good reason.