IMHO, the dojo is the perfect place to experiment with the unfamiliar and commit mistakes so you can analyze them later, but most of the times both uke and nage serve as obstacles to experimentation.
IMHO, the dojo a safe place to study and practice.
Its is in accepting failure that we find we have something new to learn.
It is in overcoming (entering and blending) with obstacle that we learn.
Overcoming and changing our habitual way of thinking and moving (force against force) is easier than living with resistance for the rest of our lives.
Perhaps there is no hard or easy.
Perhaps there is only the courage to train and live with humility.
Thanks for reading and responding.