English It is no less effective to earn on hockey with surebets than football, for example. The only major distinction of hockey surebets is their seasonal nature. It is very difficult to find a hockey game in the off-season or all the more to detect a surebet among those rare hockey games.
At the same time, the number of hockey surebets increases exponentially during the season, which lasts about six months. Since the bookmakers, firstly, open up many markets for hockey games, and secondly, there appears a lot of difficult-to-calculate events which serve as the causes for surebets (see article on the surebets and factors leading to their occurrence).
The conclusion is simple: It is possible to make money off hockey during the season, and sometimes it is even easier than with extremely popular football or tennis.