Like most i let mine drop off in the summer, Keep a decent baseline fittness but they are aloud too go soft in other words put a few extra pounds on and just like the most of us lie about in the sun all day with a mooch in the evening for an hour or so like you say Gnasher good for the body but also good for the mind, Plus sorts any little niggley problems out.
Come stubble time too fitten them back up, Slight change of diet, And get them behind a few
I even know lads that will even throw the season give them a fornight off throw he season just too really recharge there batterys.