What niche are you in? I work in weddings and Pinterest is huge for us.
Of course anything fashion, home decor etc is going to do well on there.
Pinterest is a search engine. Similar strategies apply and I do keyword research within Pinterest for our content.
You can get high traffic numbers if you manage to get one of your pins to blow up.
Be aware though that it is a different kind of traffic. We do sometimes get people opting in and enquiring via Pinterest, but traffic from Google where there is a clear intent to buy is obviously going to convert better.
A quick tip is to search on Pinterest for what keyword you think your image is. Then Pinterest will suggest similar keywords in their search bar for you. Just like Google, these are terms that other users have searched for. Include these in your title and description and make sure you link the pin to the relevant page on your site.
There’s more to it than that of course but it’s a good place to start! Good luck.