Voyage and Jigoshop

Hello.

I am using Voyage for my wife's blog and online store. To run the store, we are using the Jigoshop plugin, which is working we enough for us, except the shop page displays the sidebar below the products.

There are general instructions to fix this for the TwentyEleven and TwentyTwelve themes here. I was wondering if there was any way to adapt it to the Voyage theme.

Thanks for reading.