grounding tests for flying monsterous creatures

So I didnt notice this before but in BRB it says grounding tests are caused by one or more hits at BS 1 (so 6's). So this means that PER UNIT you can only get 1 grounding test, which they can save at a 3+, which if they make they dont change flight mode... I was always doing this as every hit causes a grounding test because i guess I misread it. So yeah, kinda rough? vs say a bunch of demon princes, best bet is to keep everything as far back as possible and focus everything on them first? Just seems like a waste.

Yeah its each unit - so if your Venom hits twice, its only 1 test.

Once the are down though, we own them. FMC are just more expensive MC in most cases and poison ruins them

When I play armies with flying monstrous creatures I usually dedicate my two 125pt warrior/blaster/venom with extra cannon units to holding objectives in my zone while shooting at the FMC's. You can move 12" with them, snap fire with the passengers(you're shooting at BS1 anyways). results in at least one of them getting grounded each turn. Like Massaen wrote-"Once their down though, we own them." They really aren't that bad to deal with in my experience.