1. My buddies 07 guages did the same thing sometimes. He never bothered since we always ran em full.
2. Sorry. I dont know
3. He had exreme trailer, would power the boat on till roller hit, then wed drive out and connect winch in parking lot while wiping down. This causes some front damage to gel over time. I do this on my new boat but have put on thick clear vinyl to protect the gel coat. So far the vinyl has held up and i will be replacing it shortly with a little bit thicker vinyl.
4. He had a great wake and his setup was something like this. Stock hard tanks with bow tank (1250), 400s piggybacked in rear lockers, approx 800 lead in bow and 200 lead in cabin with one bag on floor to adjust wake. I know he had more lead, about 500 lbs but cant remember where. Approx 3500 lbs, balanced 50/50 front and back, no wedge, great wake.