Declaring then would've set them 450 from 130+ overs so real enough chance of winning the game. As it was they batted the opposition out of the game and gave themselves 4 sessions to bowl a team out on a pitch that was rapidly deteriorating towards the backend of the innings.
Batted for 30 overs too long did Tunza, could've been an easy draw if the Shocks weren't in such woeful touch.
That was never an option, it would've been 500 from about 135. As it was they declared with just over 100 overs left.