Lyn Barraza, the manager at Berkeley Ironworks, climbed the highball Secrets of the Beehives at the Pollengrains. Lyn crushed through the bottom difficulties and then carefully climbed through the top sequence. Notice how she searches for the best possible sequence and isn't afraid to return to a rest jug. Lyn climbed this problem ground up and employs tactics similar to onsight climbing on a route.
Earlier this season, Sonnie Trotter made an ascent of the super highball Ambrosia on the Grandpa Peabody. The V11 boulder problem has a difficult start off the ground involving some hard crimps on razor blade holds. Rather than destroy his skin on the initial moves, Trotter used his rocket box to pull on mid way through the problem. He climbed through the next hard sequence and then jumped down. This rehearsal helped him for his send.
When Alex Honnold made his ascent of Ambrosia,he had toproped the top section a number of times. This allowed him to feel confident and move efficiently through the less difficult but scarier top sections. Inspecting the holds, breaking off loose rock, and chalking the rock helps a lot with confidence and moving well high off the ground.
Be careful when you're high balling. The large the fall, the more likely you are to injure yourself. Have lots of pads and spotters. Be comfortable on the grade of the problem you are trying and stay relaxed up there. A calm mind climbs significantly better than a worried one.
Stay safe and have fun!