You could simply lay down a carpet found here that matches the floor of all the fields https://shawfloors.com/flooring/carpet/details/attitude-change-ea618/ground-pepper
I do NOT recommend tiles. If you can get a roll of carpet, its the way to go. My team has two, one for practice and one for our pit and we just have some strong members roll it out. Tiles can get caught under wheels and just cause issues out the wazoo. Just vacuum and roll up when you’re done. They’re a huge hassle to store because they’re big and bulky but totally worth it.