Related Product

Hi,

Yes, that's possible.
No need for a hack.
First, you need to disable the module in the "modules under the product page" option of the HikaShop configuration.
Then, you can enable it via the Joomla modules manager in the position where you want it.
Now the thing is that even if you restrict its display to only the menu item of your shop, you'll still see it on your products listings, not only on the product page.
But there exist module management extensions, like Advanced Modules Manager (that you'll find here : extensions.joomla.org/extensions/style-a...les-management/10307 ) which allows you to restrict the display of a module to only the product page of HikaShop.