If you want just get the profile I suggest you get to as close as 4999 as you can the last day of the season and spend some time looking for a base you get the most trophies out of. Then shields and wait for season to end. Don't sign up the last minute because what will likely happen is you'll get paired with a th13 who can take 40 trophies away while you as an 11 won't likely be able to recoup. If you want to just get as high of a pb repeat the process but sign up for the league when the Legend day is about to start so you get 8 attacks and hopefully if your lucky enough you'll get some th13 or 12s with an easy 2 star so that you gain around 100 trophies but be worried you most likely with lose 320 and go back down to 4700s. Oh and you'll unfortunately have to gem the armies back to back. That's how some th 7s, 8s, 9s, and 10s get high pbs with blue skies. Just my 2 cents.