Dolphin is not known for its SEO but with my "SEO and Social META Tags Controller" you can be in total control. Every page that is visited gets analysed by the module and a page title, summary and keywords are automatically injected to the header, as well as social media tags for Facebook, Twitter, Instagram and Google+. From now on never missing SEO and Social META Tags again.
For each page you can change any of these tags to whatever you like and also specify if it should be indexed. If you have multiple URI's pointing to the same page, you can set a 301 redirect, so that search engines know what and how to index.
The module is super fast and uses caching for all its information. This means that database lookups are reduced to a minimum and only done when no information for that page is available in cache.