What opportunities existed for sharecroppers who made money in a growing season?

There was little opportunity .

But the major opportunity was the fact that you can borrow a portion of land this year and borrow another small portion another year without payment of rent.

Explanation:

Sharecropping is a form of agriculture in which a landowner allows a tenant to use the land in return for a share of the crops produced on the land. Sharecropping has a long history and there are a wide range of different situations and types of agreements that have used a form of the system.

Americans autonomy in their daily work and social lives, and freed them from the gang-labor system that had dominated during the slavery era, it often resulted in sharecroppers owing more to the landowner.

the enslaved people onboard suffered from illness with some frequency