Basketball - Triangle Offense Pitfalls to Plan for

The kids need to learn to both expect and handle the hand-off. This won’t be easy.
The post player must learn not to pass behind the cutters or at their feet. When you do lay-up drills, put the post guys at the top of the key so everyone passes to them and then cuts to get the ball back and lay it up.
Spacing must be maintained. This is a good habit to learn, no matter the offensive set.
Once the kids are familiar running the patterns, have the post move from side to side. Whatever side the post is on will be the strong side and that is the triangle side. It works both ways.