@aidyj88 You can participate in as many races as you want. If you just want to/only have time to make one or two races that's totally fine. You'll still be awarded points based on where you finish since those go into (potentially) making the final heat.
We have monthly exhibitions going on at the moment as you can go to the leagues page to check it out and sign up if you want. We also have a discord channel where you can chat with us about the game and everything hydroplane related. Our signature season, the Saturday Night Hydro League, takes place in the winter time where the racing gets real competitive!
You can join our discord channel and there will most likely be somebody who can race with you. If you want to jump on the UHL server in game, type in 'Uhlhydroplanes.com' in the server box to join the server that we use to race
You can create custom paint schemes with pretty much any image editing software like Photoshop, you just need to save/convert it to a .dds file for it to show up in game. A scheme also has to be downloaded by other people for them to see it in their game. The blank templates are here in CP's dropbox: https://www.dropbox.com/sh/r44qc2jvr4bepns/AAARhfDiTB-HxW28Dma0QWbYa?dl=0