What's the furthest someone can swim fly with good form?

Just talking about *me*... currently I can swim fly with very good form for about 25 yards. I have not tried 50 yet because I am quite sure I would not make it the whole way with good form and I think there is not point to swimming it with bad form. I am doing one arm drills (3 strokes one arm, 3 strokes the other, 3 regular both arm strokes, etc) on the lengths beyond the first 25 and hope to soon be able to swim a 50 with strength and good form. In the past I swam the 100 and 200 fly and I think my form was good. I remember once doing a 1000 fly in workout and being the only one to finish it and I remember enjoying it. lol I had a very strong stomach back then. That was over 20 years ago!

Just talking about *me*... currently I can swim fly with very good form for about 25 yards. I have not tried 50 yet because I am quite sure I would not make it the whole way with good form and I think there is not point to swimming it with bad form. I am doing one arm drills (3 strokes one arm, 3 strokes the other, 3 regular both arm strokes, etc) on the lengths beyond the first 25 and hope to soon be able to swim a 50 with strength and good form. In the past I swam the 100 and 200 fly and I think my form was good. I remember once doing a 1000 fly in workout and being the only one to finish it and I remember enjoying it. lol I had a very strong stomach back then. That was over 20 years ago!