Leftotian

You shove single kerbal with some sciense stuff to polar orbit once and leave him there forever. Now you can do infinite "above" missions, no matter where they are, because polar will cover all of the planet, you just need to timewarp. Doesn't get cheaper than that. "Below" you need to fly with no or very low timewarp, it takes forever. You can do multiple space missons with much higher reward each in time it takes to do one long range plane misson. Flying plane long range is the most expensive thing you can do if you consider how much money you can make in same amount of time. "Below" missions next to ksc are fine, but op was asking about the ones that are like on the other side of the planet.

Yup, had this problem with ore recovery mission. Floating in the ocean didn't count. On my second attampt it broke in half and ore sunk to the bottom - contract complete. Kinda silly. Floating on the surface? Nope, to difficult to recover, we won't pay you. Oh, it's at the bottom 1000 meters deep? Sweet, here's your cash!

Move them down to the fuel tank, they only cool stuff one part away. 1 small radiator/small drill is enough.

The "above" ones can be done from polar orbit with time warping. Not really worth it, but doable in reasonable amount of time if you really want to do them. The "below" ones are ignored 100% of the time because they are the biggest dumbest waste of time you can do in KSP.

I'm not sure how ore drilling is calculated, but isru will only use what you have in your ore tank when you leave the craft and ignore all the ore that was drilled after you left. It will try again every 6 hours. So in every 6 hour chunk it will only convert as much as your ore tanks can hold assuming your drills can fill them that fast.

Actually you need to make sure that you have no room for ore left before leaving or you will get less fuel in your first day away from the craft. It will not affect performace after that.

The only thing that wastes ore is small isru. Drills are always produce 1:1, they can't waste any ore. D asteroid will give you 5-20 orange tanks of fuel.

They f-d up(yay filters) something in 1.1, it's laggy but it works, just keep spamming the button.

I just memorized stars in those two spots and use them to timewarp to right position. Easier than switching ships.

Left click + drag your mouse. But the dumb thing will reorient itself in the most inconvenient way as soon as you try to move. You can disable aoutoorientation of kerbals to camera in options, but that one also sucks.

Nope, no benefit, no difference in drag or anything, just kills your engine.

Nope. Mun only has 15 biomes, poles are 1 biome.

General advice is: throw all monoprop into garbage because you have no use for it, move all fuel tanks up as much as you can, then just keep adding wings at the bottom untill it's stable enough to not flip over.

Judging by two fires on a black rectangle that you call screenshot, you blow your shuttle away with 2 SRBs.

Nope, they don't care. I had to claw one around to complete the contract. Now i always check first and rename/delete empty satellites.