cables locks and chains are all good for some one grabbing the ski and going. But no one has posted anything about locking their hoods and pumps their most expensive things there. Hand tools which make no noise you can take a big $$$ motor and pump set up in no time making no noise esp with 2 people.
with that being said with my skis i always ran a cable through the front bow eye over the hood tight n to the rear of the ski/pump. and also chain around driveshaft to trailer its a quick deterrent for petty thieves, but anyone going after these skis now a days know what they are looking for and will do everything they can to get what they want. these guys have balls of steel steeling
now and dont care about much inc getting caught. so do what u can dont let it outta your site and pray at night that nothing happens to anyones skis.