As a professional writer I would just like to point out that most of the photogs I know/work with are also writers and most do videography as well. :er:
As a professional photographer, I would just like to point out that the many photo editors and art directors that I have personal relationship with, have all agreed with me that it is not in the best interest of someone who want to be known as a photographer to also try to market themselves as also a writer. That doesn't mean that it's not useful to be able to write well. I think that no matter what you do, it's useful to be able to write well and communicate clearly. I also do writing from time to time (just had a 2500 word feature in Backpacker magazine), and am getting into professional videography (have a multi segment commercially funded documentary in the works), but you won't find anything about them on my website.. There's a difference between doing them, and marketing yourself as a photographer/writer/videographer. It's one thing to approach an editor as a photographer, letting them know that you would like to shoot an event for them, and maybe saying, that you can also provide photo captions and 300 words on the event if they want. You don't have to bill yourself as a writer/photographer to throw a magazine some words every now and then when they need them.
I started trying to get more writing gigs with other outlets and started building my now very desirable
portfolio.
A little cocky, don't you think?
Now I can (and do) market myself as a writer, or a photographer or as a photojournalist. (You might want to look that one up, GeneralBenson...

)
Just to clear things up, Photojournalism is being a photographer who does news and story reporting by means of their photography. Not someone who is a photographer/writer. It has nothing to do with writing, besides the fact that it is usually meant to accompany writing, which is probably done by someone else.
I'm not saying there's anything wrong with being a photographer/writer. You're doing it, it's working for you, that's great. But you are exactly what I said in my first post. You're a writer who then took up photography to accompany articles and be another source of income. You're photos are pretty decent, and I'm sure work fine in a lot of applications. But they are very different from what I would expect to see from someone who is a professional ATV photographer. I think being a writer who takes up photography is great. More power to you. But I think it's a whole different ball game for someone who wants to be a well respected professional photographer, it generally doesn't do them good to start calling themselves a writer/photographer, because people will assume something different than they would about someone who is just a full time, dedicated photographer.
I'm not trying to knock you, or say what you're doing is invalid. But the OP is talking about wanting to break into BMX photography. Distracting himself with writing is not the answer, unless he wants to go no further than event coverage. It's different with writing, but with photography, even getting a "very desirable portfolio" among blogs, websites, and some mags, is still small potatoes when it comes to making a living. If you ever want to do more than scratch by, the real money is in commercial work. Working for the companies that make all the things that people play with in the magazines. And they don't give a rats ass how well you can write. They want to see the best photography, and nothing more.
The one caveat I will put forth is that with any niche industry you want to work in, anything you can do to get deep into and entrench yourself in that industry will pay off in spades down the road. Knowing the right people is immensely helpful. And if that means doing some writing, and doing some event coverage, than so be it. But that is still very different than marketing yourself as a writer as well. Many niche sports photogrpahers have come from inside the industry in another way, former athletes, former reps, former company employees, former magazine editors, former writers. Knowing people makes a big difference, but not how you think. That just mean, that when a job is available, they know who you are. You still have to be the best one for the job. So, sooner or later, you still have to convince all those people that you know that you're one of the best ____ sport photographers. In any niche industry that I've taken a close look at, I've noticed that about 75% of the assignments and commercial work are going to about 5-10 people, and that's because they're the 5-10 best people in that niche. If you ever want to rise to that level of photography, it will be from a ball-busting, dedicated pursuit of being one of the 5-10 best, not from pursuing writing.