Segal in films or recorded tape? A lot of the hand work he does in film I believe is from Wing Chun, perhaps your in the wrong art all together my friend.
I go through constant phases of doubt whether Aikido will make the STREET SOLDIER I was born to be.... lol. Even to the point where I consider taking BJJ! AHHHH! (Kiddin' BJJers, respect where its due).
I think, in my aged and learned experience of Aikido, which is one year, that you either like it or you dont. Speed and strength are NO subsitute for powerful technique, and this cant be rushed.
Just enjoy the journey, and if you're not, change trains.