An important practical advantage of the proposed method is that there is no need to accurately set the sweep time in order to isolate specific spin-spin interactions: under the conditions of ultra-low field NMR, spin polarization is rapidly distributed over the entire network of coupled spins. The proposed method has potential for optimizing arbitrary experiments by adiabatic variation of the Hamiltonian, particularly in situations when the complexity of the spin system under study, or the setup of the experiment itself, makes detailed optimization approaches impractical. One example is SABRE, where the need to simultaneously take into account spin dynamics and chemical exchange make exact theoretical predictions difficult.