I'm not giving up without a fight>
pudseyb - as Cupid asked on your other thread - which publication is it from? - might give us a steer on type of clue - and, may I ask, are you sure of your given letters?
I'm so sorry Mamya, I was getting frustrated with two clues and mixed them up.
I was referring to 20a Means to go on a lake..... which I was also struggling with.