Eternal Fishland...

I've been playing Fishland for about four months now, and honestly, I'm starting to get tired of it. Is it even possible to win? I'm only $0.08 away, but every time I try, it feels almost impossible to reach. In the beginning, making progress was "easy," but now I can spend hours without getting anywhere. Plus, I really dislike spamming my friends with invitations and links.

Any advice on how to finally finish this?

By the way, if it helps, my referral code is 384971017 (Canada). Thanks for any tips!