I'd argue White dwarfs aren't actually helpful. Firstly, like you said, they are extremely dangeous due to their massive exclusion zone and short jets and secondly, they give such a laughable range boost that it's actually faster to just continue jumping, because in the time it would take to carefully position your ship and then scoop for the boost, realign yourself (again while carefully circumnavigating the exclusion zone), etc. , you're actually going to cover three times the distance just by normal jumping.You can use white dwarfs for long range jumps, but its risky. I’ve never had the need to so I haven’t done it. Those jets can rip a ship to shreds as you just learned. But there’s videos out there that show how its done.