I bought a 2 up seat for my wife and I, but there will be lots of times she doesn't ride... so I'm trying to decide before I put money in a backrest... if I should get a solid backrest and ride solo with 2 up seat and rest...or get a detachable backrest and solo seat and swap it all out when she isn't riding ? I was originally leaning towards solid 2 up setup, mostly cause it's cheaper, but I'm having second thoughts. Which do you guys prefer ? Opinions pls ? Thks.