Launch doesn't happen until the launchers exceed (in a blue pad 2 launch) 2000 points. If you had 1042, and he got up to as high as 957 (thus totaling 1999 and not yet setting off the launch), he could add either 120 or 360 and in either case, overtake you for first place while in the same move exceeding the 2000 points and setting off the launch.
Fred is saying that to prevent a malicious player from hijacking, you'd have to exceed 1000 points (and also 1042) to ensure you don't get hijacked. Math tells me that the magic number is 1181. In this case, you have 1181, and that leaves as many as 819 (for a total of 1999) that another player can get without setting off the launch. If they add the max item of 360 to their 819 points, they can only get up to 1179. So you need 1181 to prevent a sole hijacker. 1180 would allow a tie.
LtCol Rehab (may show as "username") - need Long Distance (LD) flight items like spare props, osc beacons, fuel hoses, deicers. LtColRehab2 - need LD flight items, thanks all!