Yes, that is how I completed super power island!
You tube
Depends on what island you're on. there's a few You tube videos that show you how to get through a stage.
you do not have to walk through walls just get the member card cheat code on u tube
Through the tube where the power steering dipstick is located, using a funnel if your aim is lousy.
Go on you tube and search big nate walk-through part___ and it will show you what to do.
you go through the tube thing and then go to the ground and the rest you will find out along the way
Bute (an island in Scotland)
Yes
the water island near the beginning of world 4 in the level jump hit a wall near the ending of the level and enter a golden tube
tube
The best for those materials would be PL Premium or LePage Extreme, both available in small tube or caulk tube.
look at you tube