I appreciate your confidence in me, but I may not be able to help as much as you profess. We do travel through
Texas a lot (you have to to get anywhere else!) and I shore am saddle sore, but we don't actually stay at very many parks here.
When we go to the coast it is usually to Port Aransas, and we have always stayed at Pioneer RV Resort. While this is a really nice place, it does not have a pier. It does have a boardwalk to the gulf, but even then there is no pier right in that area. I think the town of Port Aransas (about 5 miles away and there is bus service from the park) has a public pier. There are 2 other RV parks right in town, but again I do not know about a pier. We are not fishermen or crabbers (though we do get crabby at times
), so even though I would like to live up to John's glowing expectations, I am probably not the best person to provide the information you want.
However, I will tell you that Seadrift is close to Port A and there are lots of private campgrounds in this general area. You might also consider a Texas State Park. Many of them are very nice. Goose Island State Park is in that area and is supposed to be good, but we've never stayed there. It lists a lighted fishing pier, but other than that I know nothing about it. You can get info on it and other state parks at http://www.tpwd.state.tx.us
Wish I could help you more, but fishing (crabbing) is not my bag of worms. Maybe someone else can come to your rescue, and good luck finding what you're looking for.