Hand reared baby birds come pre-programmed to want to spend time with humans, there's no challenge there. Without the added challenge of trying to persuade a flighted bird that is wary of humans, you should find that there is almost NO difference between bonding/training a young bird that is flighted vs one that is clipped. When a bird has a CHOICE to leave your hand it makes you consider the methods you train with in more detail. You need to consider WHY the bird might want to choose to do what you're asking, rather than continuing to do whatever had previously been amusing it. The key to that is to make yourself reinforcing - use bits of food, friendly words, cuddles, etc depending on what your new bub seems to enjoy. If the bird is constantly moving away, trying to avoid your hand and even trying to bite, then consider that whatever method you're using might be aversive (or unpleasant) to it, and change the way you're asking. Instead of pushing into their belly for a step up, offer a treat and offer your hand a few centimetres from their belly. If they fly off your hand at cage time, consider what you can do to increase the value of being in their cage - put a favourite treat or toy in the cage to motivate them to go in. There are so many threads in the behaviour section that already detail some great ideas for training flighted birds using positive reinforcement, you should draw from those experiences of other members.
In regards to safety, the notion that a clipped bird is a safe bird is a human concept that holds very little truth. A baby bird that has been permitted to fly from the start will ultimately become a SKILLED flyer. They will easily "think on the wing" to avoid obstacles, and keep out of trouble.
Just my two cents. Training a flighted bird is MUCH more enriching for everyone involved, and will ultimately make you a more considerate trainer.
