It's 180*3 =540 bullets were fired during encounter, not a single hit. Can we call it unlucky?
I don't have a complete understanding of the mechanics of craft weapon accuracy vs UFO dodge, but to my knowledge it is entirely possible you had a -% chance to hit the jetbike with a rotogun.
The rotogun has a base 20% chance to hit. This is modified by the craft bonus and whatever the pilot bonus is, let's assume +0. Jetbikes are very small UFOs so that is modified to 20*0.75 = 15%. I don't know exactly how UFO dodge works, if it's a flat reduction to the weapon accuracy or a separate roll, but I think it's a flat reduction to accuracy. Under that assumption, the jetbike's 50 dodge gives you a final accuracy of -35%. I.e. it is impossible for the rotogun to ever hit the jetbike.
I tried to save "over stunned" enemy by standing over him and treating him a drink, but instead Gal downed it herself. I guess enemy units can be saved only by advanced medkit?
The canteens can be used on unconscious enemies, but it might take a few drinks to get them out of overstun, depending on how much health they've lost and how much stun damage they have. I believe medikit targeting priority (which canteens and the like are considered as by the game) is:
1. Valid standing target the user is facing;
2. Valid unconscious target the user is standing on;
3. The user themself.
Thanks, It's worth a try. It just, for example, Spike Rocket has a hit chance of 40% but there are only few of them per weapon slot. Logically speaking Rotogun with almost two hundreds ammo per weapon slot and hitrate 20% had to have better chances to hit a target.
I think that until you can start making/finding higher tech craft weapons, one of your best options for jetbikes are Seagull missiles. They have probably the highest base accuracy (85%) that you'll see for a while, and you can just buy more as needed. They're behind Contacts: Authorized Dealers, of which the main blocker is probably Prize: Bank Favors.