Barrett Tillman was one of my favorite aviation authors growing up, him and Mark Berent. Tillman I've seen on a few tv programs and also a couple of articles someplace talked about the cannons on the F8 and how unreliable they were, especially if fired under any G load. Strange that a plane with the nickname "Last Gunfighter" had crappy poorly functioning guns. I've still seen and read some great stories by Crusader pilots during the Vietnam war and it was a great single engine fighter by all accounts.
The SUU23 pod I've read had a gunsight of some kind that made hitting a target somewhat possible, but everything else I've read about the gun pods wasn't rave reviews for sure.
I've also read a lot about the air to ground IAF tactics during the 67 and 73 wars, and apparently they used the A4 with 30mm mounted guns to great affect against enemy tanks. I've always wondered about that, a slow firing single barrel x2 gun platform vs the heavy tanks of the era, and wondered how many the A4's actually killed, as some guys had written that a number of times flights of 4 A4's would beat the hell out of a company of tanks, some pilots killing 3, 4, even 5 tanks in a single sortie. I don't want to doubt them, it just seems like really good shooting, when you think about the A10 and its fire rate in comparison with the same caliber of round, those A4 pilots must have been very good shots and got in very close.
Speaking of Tillman, he wrote a book about the F20 Tigershark, and I always thought it was the perfect fighter for Israel. It was probably the most efficient fighter of the time when it came to using fuel, it could hang with anything in the sky in visual range fights, and could be equipped with a good radar as well. It was also very small, and hard to see, and from the pilots I know who fly the CF18, when they used to fight vs the CF5's, they said it was a real PITA due to their size. They did have very good 20mm guns, mounted in a great position for good accuracy/trajectory as well, and like I said, due to the guns, size, and cheapness for the high performance given, I always figured Israel would be the one country that would have bought the F20.