Well, I am fit, slim, and have no belly (genetic), but I still care about looking good, even at almost 56. There, I said it. I am pretty happy with my body and have accepted the fact that my bum will never be firm (it is smaller, though). My power to weight ratio sucks. I am weak. Even when I worked with a trainer, I was weak. I have to work on this...
I have found, the older I get, the less cardio I need to do to maintain my weight. It gets to a certain point (3-5 hour rides), I just get ravenously hungry. My appetite seems more consistent when I moderate my cardio. If I do at least 30-60 minutes 4 times a week, I will maintain. But, if I miss my yoga, core, strength stuff, I notice the difference. Try adding in more core work??
I weigh myself everyday. I look for a trend. Over two pounds up, I cut back on carbs. Since I like to eat and cook, this works for me.