I'm hesitant to even TRY asking this here because of the amount of self proclaimed experts and anecdotal "proof" people espouse... so please, keep it factual, and cite your sources if you can.
I'm new to sports. I've been a healthy eater forever, and paleo for 2 years, basically fish & veg with a fair amount of meat and some starchy veg with each meal totaling 100g net carb a day give or take, was around 1500 cals in total before I began sports.
I started rowing 2 months ago with the aim to (1) drop 15 lbs from 145 (at 5'7") to be a lightweight rower at 130 lbs, and (2) lower body fat % to look leaner and more toned. We do weights 2x a week (30 min), erg practice 2-6x a week, and circuits 2x a week (weightless, 45 min). I try to do yoga 1-2x a week as well.
Since starting rowing, I find that I am hungry ALL THE TIME and eating way more than I usually would, and in two months I have gone up to 157 lbs. I haven't noticed a huge change in my body composition, and I don't see roundness in my face, so it doesn't seem to be a fat gain, but I'm annoyed because I am not tall enough to be a heavyweight rower and at this rate I don't see myself making it to a lean 130 to be a lightweight.
Since I am new to figuring out diets to match an athletic schedule, I'm not sure what to do. If I go under 100g of carbs, I'm hungry all day, and when I train I find that I need to eat even an extra sweet potato to stay satiated, so I'm not comfortable on a solely lean-protein and veg diet.
Is it possible to get leaner or do I need to accept that maybe I'm just not built for it?
EDITS: I'm willing to experiment with my diet to see what works, so feel free to make more specific suggestions. I'm not willing to give up the sport because I really enjoy it, and that means continuing the training (sorry, stubborn) so if I want to lean out it will have to be done with this incorporated. BUT if I have to choose between my goals, I'd rather be lean than be a competitive rower, but I will NEVER compromise my health.