Portland OR campgrounds, looking for big rig friendly

[Portland OR campgrounds, looking for big rig friendly]

We are going to be in the Portland OR area for about 2-3 weeks and are looking for a nice campground that comfortably fits our 41' Class A motorhome.  Any good suggestions or ones to avoid.  Thank you.  John & Gretchen Fiery F472886

[Turning While Towing A Vehicle On A 2-wheel Dolly]

Would appreciate any hints or cautions when turning corners while towing.

[Towing Nissan NV200 On 2 Wheel Dolly]

We are complete novices. We will be towing a Nissan NV200 on a 2-wheel dolly behind a 41 ft. motor coach. We could use advice on turning and general driving practices. 

Will be attending Driving  school, but have been told that towing is not included.