Stitching for Swim Meet

I am a swim coach and looking to use this app to stitch together a whole 25 yard field. The problem is the side the camera goes has two 3 meter diving board structures, so I cannot get full view of the field due to obstruction. I tried having my two GoPro 9s on tripods on each end with the field of view having the “halfway point” being on the edge. However, when I start to merge the image is completely ghosted out:


Is there something I can do to make them line up? I mean I have stationary lane lines that can as as reference!

This won’t work. The 2 cameras have to be as close to each other as possible.

I have done it with camcorders before though so I just wanted clarification. For the mount then: Should the lens be set to linear or wide? The problem is for the dive and turns I do not want it warped so I can show athletes later.