This was an interesting one with a nice basis for I feel like a lot of cool different directions and overall a really interesting base concept. Though I feel with a few holes that sorta remove the challenge, mostly since time trials are so weird in terms of challenge etc. with a game like this.
Cause a lot of the time my main strategy ended up just being to launch a bunch of golf balls and hope they reached what I needed, as long as they were following the right general path. I would say that's probably partially encouraged by the fact that there is no indicator on what ball hit the exit, or what path it took etc.. I feel like some sort of indication of that could be helpful for planning later runs, cause this definitely feels like a game you'd want to play a few times.
Another thing I'd say is maybe a bit more specific control over the golf ball, some sort of, last path visual etc. would be great for attempting to slightly tweak where you were going and try and get there faster. Or just ignore it entirely and setup some sort of cascading setup that hits a ball into the goal. Whichever works!
Overall tho, interesting, I feel like some more mechanics could help mix it up, but cool right now nonetheless.