Builder of Jeep stuff
I made one using a 110V winch https://www.amazon.com/dp/B01M22RUZY/ref=cm_sw_em_r_mt_dp_U_ws40Cb12P979T mounted to the opposite wall, para cord and some pulleys.
It works great! It is no more trouble to remove than the factory hard top.
I can't speak about that other top lift but I would think that it will not be enough for the J30