Top cover is deemed so important that no-one does it now; I suspect that the helos have better nav kit than they had when we were on RS60.
....and our survey said....
if the FW goes u/s, the helo will crack on and do the job; albeit with less of a warm fuzzy feeling that they are being looked after.
In excess of 150nm from land the decision is not with the Op Capt - it goes significantly further up the food chain.