I have tubed or kick boated the Delta numorus times and I have never felt unsafe. You get idots out there just like everywhere else but as long as you keep alert you should be fine. As for places to float, you can float the back of Ladds for starters, just up the channel there is a launce at Luis Park which gives you acess to Smith Canal. Further north you can fish Whites Slough off either Gard rd or Corria rd. You can launch off the levee on Whisky Slough rd and fish Mildred Island. Tere are really endless places to fish out there and I beleve that a tube is a very good way to fish certin area. Go over to the Float Tube /Kick Boat board and post this same questions and you will get plenty of responses and suggestions.