Cyclesome, there is much more to a bike fit than not seeing front axle. However, when I first started riding my road bike i had flat pedals on without straps or cages and I never had a problem with not being able to keep my foot on them. Going clipless might be a good choice, and there are plenty of choices when it comes to pedals and shoes. You might need time to adjust to them or maybe you will be naturally good. First and foremost you should do what you feel comfortable with. I went clipless after a couple of rides on my bike and had to practice stops and starts, clipping in and out. But, all that being said; the fact that you have flat pedalls might not be the reason you are not comfortable. Good luck!