There is a glitch with the Tack Shooter that allows it to shoot out tacks as fast as a Super Monkey. To do the glitch, place the Tack Shooter, keep pressing tab until a yellow box surrounds its first upgrade, then press space 4 times (the player can do it more if they want), but the player cannot buy another tower, as the player will get negative cash. The player can continue purchasing the same upgrade, however.
This also works with Longer Range, however when the Tack Shooter's range becomes infinite, its tack won't increase in range, it will just detect bloons from anywhere on the screen. (This glitch works with any tower, however it's only good on the Tack Shooter, the only tower with a "faster shooting" upgrade.