Check your owner's manual for the tow ratings and payload for your truck, make some allowances for the age and mileage, and refer to our database Trailer Weights in the Real World
to see what might be possible (post #297 links to a spreadsheet you can download). I'd guess a 13' might work, but not much larger without going to a V6.
Have family in Oceanside, and Carlsbad State Beach is one of our favorite places to take our 13' Scamp
. Tough place to live, though, as is almost any place in coastal southern California. Better to visit. We originally bought our Scamp
because the price of hotels had became prohibitive. Camping put us closer to the ocean than any of the hotels we could afford, and the Scamp
has more than paid for itself in savings. More important, it got my wife and kids hooked on camping!
Happy "egg hunting"!