Help me grow my fishing blog

In my spare time i run a fishing blog. started in june 2009 i now get: 4,563 Visits

    2,973
    Absolute Unique Visitors 

    10,880
    Pageviews 

    2.38
    Average Pageviews 

    00:02:35
    Time on Site 

    63.82%
    Bounce Rate 

    59.50%
    New Visits 

the site makes between $20 and $30 month via google adsense ads. I'd like to make $200 to $300 per month for extra income... I've done everything i can think of to grow the site (and it still continues to grow month over month). what low hanging fruit am i missing here? Any help would be appreciated. ps. the link to my fishing blog is in my profile.