If the defender is not able to get close enough to the ball-carrier to wrap his arms around him in a conventional tackle, he may still be able to dive at the other player's feet and, with an outstretched arm, deliver a tap or hook to the player's foot or ankle, causing the player to stumble.
If the defender cannot wrap his arms around the ball-carrier in a conventional tackle, he may still attempt to dive at the other player's feet and deliver a tap or hook to their foot or ankle, causing them to stumble.