I ve had the same isues on a lake that i joined this year, messed around wih strong (40lb from memory) flurocarbon leaders of a 3 foot long or so but disnt really like them as much as anything because of the safety issues so didnt even use them in the water.
In the end i ve setles on those TF Gear leaders in the weed green mainly, they are pretty versatile and i mainly use them with helicopter and running lead set ups, plus you can get them on e bay for about a tenner for 3. Which although is not as cheap as making your own leadcore up (which i still prefer) is not too bad.
Nathan
edited to say i only really use this set up when using helicopter rigs or when using braid when fishing running rigs at range, if fishing closer-to about 60 yards or so- i use mono straight through with slack lines as said above