I assume that you want to learn how to play Zydeco on your 3 rows.
I was using as an example for my learning with a youtube video of Roy Carrier playing at the German club in the States. There is 3or4 You tube short videos of his playing, one of witch features a 1 row box.
Roy plays in GCF mostly, but at least , the videos will give you an " apercu" of his style of playing and his row crossing technique and cording.
You'll notice also how little air roy uses playing, as the bellows on his accordion hardly moves.
A sure sign of a pro player.
Wilson S, on the C. Ledet tape has added a " neat" way of changing the key of GCF to FBbEB and vice versa.
On one of your earlier posts you mentionned your interest in learning on how to play Quebec Music on the i row.
As you may know Quebec accordeonistes use the 3 rows extentively in their instrument repertoire.
Infortunatly your 3 rows key wont do for that type of music, ADG yes, GCf sometimes.
But you can always try, again to get different good "deals" for different keys.