Power training is only one aspect of martial arts - anyone who has trained with a qualified instructor who has been there knows this.
In a broad spectrum art there are so many little pieces that make it work, it's important for it ALL to work. It's been a while since I've trained and I don't train ninjutsu (won't lie about it either
), but I would advise you to find your problem areas and work them into what's right, then practice that.
NEVER sacrifice quality for speed or power - even if you have to go super-slo-mo to perform it right, gradually increasing speed. NEVER be so egotistical to think you can't be getting something TOTALLY wrong, even after years of training.
Some skills should be worked every day for maintenance, just as in body conditioning. Ukemi is really important to practice a lot, kicking, joint locks only get smooth and unexpected with relaxation in technique which can only come with LOTS of practice. Flow comes with confidence in working a lot.
So ... keep a journal and make special note of the things you find lacking if you have to stop training for a short while (injury, vacation, whatever) and make a point of working them often.
Let us know how you do.
In a broad spectrum art there are so many little pieces that make it work, it's important for it ALL to work. It's been a while since I've trained and I don't train ninjutsu (won't lie about it either

NEVER sacrifice quality for speed or power - even if you have to go super-slo-mo to perform it right, gradually increasing speed. NEVER be so egotistical to think you can't be getting something TOTALLY wrong, even after years of training.
Some skills should be worked every day for maintenance, just as in body conditioning. Ukemi is really important to practice a lot, kicking, joint locks only get smooth and unexpected with relaxation in technique which can only come with LOTS of practice. Flow comes with confidence in working a lot.
So ... keep a journal and make special note of the things you find lacking if you have to stop training for a short while (injury, vacation, whatever) and make a point of working them often.
Let us know how you do.