No expert, but I can offer some advise.my experience is with the 998.
1.yes
2.in clear mold, real shallow.less than 5ft.
3.with my 998, I run the stock all in one transducer, with speeds to 50mph.others run an extra 2nd transducer so the can mount there stock transducer up higher to help pretext it.
4.i don't no the answer to this question
5.i don't think it would be hard to find this, but I really haven't looked