coloelk wrote:
Assumptions - you have a big enough truck to pull it.
you want to get it into state parks
you want to get into national parks
you would feel comfortable pulling it
cost is not a problem
Just wondering what the concenus is for max length. I know people have different likes /dislikes, but I think there will be within a foot or two a max length most people won't want to exceed.
You asked a very nicely focused question. It didn't take long for everyone to chime in on other issues. Of course the larger the trailer the more nice features it will have. If you are living in it, larger is better. But, you didn't ask for that kind of advice. I can speak from experience about #2 and #3 in your list. Since cost is not an issue and you have a larger enough truck, you are good there. Only you will know how comfortable you will feel towing. If you ask this question of 100 people they will give you 100 different answers.
I started with a tent, went to a tent trailer, got a 21 ft. hybrid next and then the 25 that I have now. As you move up in length you will lose options, no question. Even the 21ft with a slide out made some forest service and national parks a bit tight. While state and national parks are trying to adapt to trailers today they still are a long away from accommodating long trailers.
You will have challenges trying to park a 35 ft trailer in parks. Read between the lines when people post that they have never had a problem. That is usually completed with something like "in places we want to camp" or something like that. People who pull small houses down the road will often need full hookups. Boondocking in a state park is out of the question. Yes, you can get reservations for "some" sites in "some" parks. Even the larger parks with total reservation access will have very few huge spots available.
So, perfect size? Don't know that. I have a 25 and would like to move up to a 27 but anything larger wouldn't work for us.