Every climber wants to have stronger fingers since increasing your finger strength can drastically increase the pool of climbs you have the confidence to get on and
ability to complete.
The best way to increase your finger strength, while also avoiding injury, is to customize finger strength exercises to your ability then progressively
increase their difficulty over time.
If you can adjust hold depth and angle in small increments you can precisely match the difficulty of exercises to your strength, power endurance, and endurance
abilities, with or without additional weights, so you can better prepare for your goals.