When referring to the Bubishi and shooting we find both advice on how to attack and how to counter.
In Mccarthy translation, self defense diagram 10 counters shoot by attacking temple or ears.
Diagram 11 talks about scooping the legs. Diagram 12 about scooping one leg. Diagram 18 on seizing the leg
and pushing on the inside of the knee or hip joint (shoot). Diagram 21 about seizing one leg and kicking the other.
Diagram 24 on throwing over you while dropping to the ground. Diagram 29 about scooping the leg. Diagram 33 about counters to trips or take downs (seize hair, poke eyes, grab groin).
All these principles are found back in goju-ryu kata's.(saifa, seiunchin,sanseru, sesan, sepai).
So I state that shoot and anti shoot techniques and tactics are incorporated in kata.
Diagram 38 talks about the sprawl, when an opponent grabs you in an effort to throw you, shift back a little to offset his balance, shop down on his arms or back or head.
This specific tactic is found in seiunchin first 3 steps, yama-uke and at the end, dropping the elbows down while stepping back.
In Karate the advice is not to fight from the ground but to get up quickly (in view of multiple opponents).
There is however influence from Fukien dog boxing, with techniques working somebody down by attacking the legs. We find some of these techniques in the Bubishi
(described here above).
Are there better methods of training SD(bar fight perspective) than karate? Yep I think so.
Go to a decent Muay Thai gym 3 times a week for a year and youre in shape and have the technique and sparring experience for most bar fight encounters. But unless youre either prepared to explore deeply into the history of Muay Thai or involve yourselve in the sport side, there is not much variation in training.
Karate in that regard has to offer a very wide variation in techniques and principles, all to be explored from the it's legacy : the kata's.
There is no limit towards exploring the potential of kata and it allows you to investigate other MA's and relate
these concepts back to kata. That's where the kata ends and real karate begins.