Yeah its a system a few people fly. No reason why not to do it! I myself feel the 50-150mile races need a wee bit more than natural but 150+ miles I think the natural (eggs or few days old Young) is the best one. Only my opinion tho! Everyone will have there own ideas and theories
No reason Why Not Barry mate.... I myself will be natural after the 5th race. Will be celibate up till pairing up I plan to pair up and take a round of the birds, Then split them until 5th race and re pair them