Maybe using iframes, and the link to your product could be the trick to get what you want.
<iframe src="http://www.yoursite.com/?tmpl=component&view=hotspot&catid=CATID:CATEGORY_SLUG&id=HOTSPOTS_ID:HOTSPOTS_SLUG" scrolling="no" width="100%" height="100%" frameborder="0"></iframe>
where:
www.yoursite.com
---> is your website address
CATID
> category's ID
CATEGORY_SLUG
> category's name
HOTSPOTS_ID
> hotspot ID
HOTSPOTS_SLOG
> hotspot name without spaces
width="100%"
> is the width of the iframe (it could be in pixels as well)
height="100%"
> is the height of the iframe (it could be in pixels as well)
For more details you can check the following topics:
https://compojoom.com/forum/52-newbie-area/14899-how-can-i-display-hotspots-component-out-of-joomla
https://compojoom.com/forum/52-newbie-area/16018-2-sites-1-hotspot#16027