How do you put a tree stand up on cabelas outdoor adventure?

press R1 and hold it.. then select the duck stuff and holding R1 press X, and appears the item "treestand" , it´s like in other section of the inventory.. then you select it.. and it´s gonna be in your main inventory then just take it and done..!! i had a hard time also but luckily did it..

For Wii (Zapper Play)

Press and Hold "A" (do the following while holding "A" the whole time). With "Control Stick" select the "Duck Call" and Press "C". This will bring another inventory menu to include your "Treestand" and "Elk Call", select "Treestand" this will swap your "Duck Call" with the "Treestand". Let go of "A". This also applies to the other equipment in your pack when applicable.