The phrase "hardly advisable" is correct and can be used in written English.
It is often used to express that something is not a good idea or is not recommended. Example: "It is hardly advisable to go swimming in the ocean during a thunderstorm." (meaning it is not wise or recommended to do so).
The Bush administration's proposal to give the states greater leeway over programs hardly seems advisable right now.
Mr. Dutoit maintained that spirit much of the time, but there was a wild card: the soloist was Lang Lang, and predicting Mr. Lang's interpretations is never (well, hardly ever) advisable.
Leading early didn't help the pattern against Ghana and trailing Portugal early (it was the sixth time the USA have conceded a goal in the first five minutes of a World Cup game) arguably made for a more decisive performance, but that would hardly be an advisable tactic against a rested Germany looking to counter.
Today, the majority of California's bonds are owned domestically, many by individual investors — hardly a constituency it would be advisable to leave high and dry.
Considering the potential numbers of second victims in PC and hospitals, and given that to date health centre managers have hardly begun to address this issue [ 39], it seems advisable to take steps to raise awareness among health professionals, as well as to reinforce a safety culture.
The director, James Ivory, and his trusty screenwriter, Ruth Prawer Jhabvala, are such veterans of culture clash — having dished up more Henry James and E. M. Forster adaptations than is medically advisable — that the prospect of yet another rake-meets-ingénue setup should hardly have fazed them.
The results show that the predictions of evapotranspiration, runoff and baseflow are hardly affected by the classification uncertainty when area-averaged predictions are intended, implying that uncertainty propagation is only advisable in case a spatial distribution of the predictions is relevant for decision making or is coupled to other spatially distributed models.
