Should free shipping offers be part of cart recovery?

As a Shopify store owner in the competitive e-commerce landscape, I've been wrestling with cart abandonment like many of my peers. Recently, I started diving deep into strategies that might convince those hesitant shoppers to complete their purchase. Free shipping keeps coming up in my research, but I'm not entirely sure how to implement it strategically. Is it just another blanket discount, or can it be a precision tool for cart recovery? I'm seeing significant traffic and cart additions, but my conversion rates are frustratingly low. Some customers add items, get to shipping, see the cost, and immediately bounce. It feels like I'm losing potential revenue right at the finish line. The psychology behind shipping costs is fascinating – even a $5 or $6 shipping fee can completely derail a sale that was moments away from completion. I'm looking for a nuanced approach that doesn't just give away margins but strategically uses free shipping as a conversion lever. My goal isn't just to offer a discount, but to understand the precise moment and method of intervention that turns a browsing session into a completed purchase.