In my book, low forks are the best choice when it comes to maximizing target shooting accuracy, as minimizing torque on the wrist is essential to increase stability while aiming and shooting, and to minimize fatigue when tight groups at 10 yards are your main objective. I only shoot O.T.T. with flat bands.
That said, low forks come with the caveat of higher exposure of the index finger, upper hand palm, and thumb to potential injury if you mess up the pouch release for any reason. This is why I have a marked preference for pinch-grip slingshots, where the index finger and thumb wrap around the front side of the slingshot frame just below the forks, which protects them very efficiently.
A so-called rear "beaver tail" seems to be fairly efficient in protecting the upper hand palm (the section between the index finger and thumb). Even if you do get a hit on the relatively exposed upper hand palm, the injury will be far less serious than hitting your finger tips - at least that is my assumption. :hmm:
Although they are nice designs, I generally steer clear of slingshots with specific rear thumb rests, or frames that require you to place the tip of your thumb on the frame edge, which exposes it directly to erratic ammo: a perfect way to spend a few hours in hospital with a throbbing thumb tip....ouch!
Higher forks are generally a good idea if you like shooting with rounded pebbles, hex nuts, or seasonal ammo, such as acorns or non edible chestnuts. The risk factor of stray shots is significantly higher here because of irregular shapes, and the inherent risks of using a low forks slingshot frame thus considerable. Fist grip slingshots with high forks (safest option for such ammo) are not a problem if there is a wrist brace - providing that this is legal in your area.
Although low forks have clear advantages, it really does depend on the type of shooting and ammo involved that should determine what fork height you ultimately use "to get the job done". B)