Pronunciation: [hˈɔ͡ɪɪŋ] (IPA)
Correct spelling for the English word "hoying" is [hˈɔ͡ɪɪŋ], [hˈɔɪɪŋ], [h_ˈɔɪ_ɪ_ŋ] (IPA phonetic alphabet).