Socal to Norcal fishing

Planning a 3 day fishing trip up to Lake Shasta and it's surrounding areas. I would love any suggestions on lakes that allow free camping as close to water. I'll be staying in a rtt. I'll be targeting trout or equivalent fish during day and catfish at night. Any advice is welcomed.

 

Up in my area we have Bullards Bar, Little Grass Valley and Collins Lake, unfortunately all those locations charge to camp near the lakes. There are however a few free camp areas within 15-20 min to the areas. Golden Trout Crossing is one, if your interested I can point you in the direction of a few others.