When I follow up on the explanation given in the Visuddhimagga for the manner of practice for the "sukkha-vipassaka" what I find is instructions to go on solitary retreat, direct attention to the various aspects of the body, discern the elements, make effort and develop concentration.
"When one thing is practiced & pursued, ignorance is abandoned, clear knowing arises, the conceit 'I am' is abandoned, latent tendencies are uprooted, fetters are abandoned. Which one thing? Mindfulness immersed in the body." -AN 1.230