Hey nikor,
Thanks for reaching out. Typically in situations like this we recommend the following:
– Sync all the products over to WooCommerce
– Set the products you don’t want to show in WooCommerce as Drafts
This way all the product information will still be synced to WooCommerce but they will remain hidden from normal customers. If the customer then wants to make the products visible during a certain season they can simply just publish the products.
/Carl