When you use the peanut butter crackers to get Spitsy to dig holes, you have to have the map to the Time capsule (from Seal island) and you have to dig in the right place (where those girls are talking in the playground). Otherwise, you get empty holes.
(see related questions)
1.You pull on it.
Frogs have nothing to do with the island quest.
die in a hole
Frogs have nothing to do with the island quest.
you click it and drag it out
you just pull it halfway out and click on the top
Digging up the time capsule is the last part of Big Nate island. It will not come out of the hole, so you have to click on the shiny clasp. (see solution question below)
You don't. It has nothing to do with beating the game.
You do not play as Big Nate. He accompanies you around most of the island, and races you on the jet skis.
You can't play "as" Nate, but everywhere you go on the island, he tags along.
You give spitzy a cracker right in between the slides. You get the crackers by beating Nate in the football game.
There is no Duke among the characters of Big Nate island.