No problem Fishaddict, glad to help out if I could.
Here's somthing that may help you out though and offers access where you can drive your rig right down to the waterfront for your boy. Its all catch and release there right now until Sept 15th but is stuffed with Pinks. Its on the South Skagit Hwy. where the old Lyman/ Hamilton Ferry used to cross. It will show you on maps of the area. (there's a North side and a South side launch there,..South side is where you want to be) Good spot to get right down by the water with your van, catch fish and watch your sons eyes light up.
Best of luck to you and yours and be sure to get some pics for us all to see.