NaNoWriMo

I never make the goal and its because of the pesky plot bunnies. I wonder if you have any ideas for them.

I'm confused by the question. Most people praise plot bunnies as helping to extend the story, and therefore get them closer to the word count goal. Are you asking how to stay on target and finish a complete story arc, or asking how to generate more plot twists to complete the word goal?

Stay in goal. Most of my plot bunnies take me far off my topic

Do you have an outline before you start writing?

I have a basic one but to much structure tends to kill the story before it starts

I personally try and pound out my words as quickly as possible before I lose the plot to bunnies (doesn't always work). Do you have someone you can compete with? Do you have a set number of words you write? How many words do you normally do in 15 minutes?

As someone who's done Nano about seven times now and finished every time.. (Including writing 50k in 4 and a half days, and 83k in 10 days) Outline. Even if you don't stick exactly to the outline, make a list of events you need to have happen. Jot down vague notes that you may or may not work into the story, like 'John has a sister he lost tragically?' 'Susan is afraid of the water?' 'Mike hasn't spoken to his parents in ten years?' I like to sometimes even leave them phrased as questions, if it's still up in the air if I'm using those things.
I also make sure I know the names of minor characters and places that I'll be using, even if I just make a list of about 20 spare names to snag. I've lost so much time getting stuck on what to name a few characters who are only needed for one scene.

Also try to break your words up into small packets. 500 at a time, 1000 at a time. Plan to get 1-3 'word packets' done in various time frames, such as morning, afternoon and night. You'd be amazed at how fast it adds up even if you are only getting 200 words here and there through the day.

Buy a favorite candy or treat.
Lay out a certain amount.
every 100, or maybe 200 words, you can have one. This works better if it's something like, skittles, and not like, bigger heavier candies. You don't want to do this with say, reeses cups or anything.
Don't be afraid to ramble. Describe the furniture, let your characters talk about various things, even if its not that important to the plot. Take on the role of narrator and carry on for six paragraphs about the history of the city they are in. Don't be worried if you take off in some other direction with some little sub plot, just eventually pull back to your main plot.
Have multiple character perspectives. This can help if you get stuck on what one character's scene, you can switch for a while and keep writing.

I think this means you need to practice with an outline, especially if you are struggling with staying on track to finish a story. As another person who has won nano multiple times, this doesn't have to be the case.