Looking for Tub/Shower Curtain Ideas

It's a 2016 model small tub/shower. There is no contour in the tub that would prevent water from just running along the top edge of the tub. I am thinking now that the water collected on the top of the tub and then ran around the edge till it dropped off in the right hand corner which was the lowest point.

For now I will use Velcro to keep the shower curtain closer to the surround and come up with a way to block water from dripping off the edge of the tub like. Also when leveling trailer do it in a way the water will run the other way...