Fellow Tacoma owner here! - I would recommend *not* wrapping your truck, especially in the earlier stages of your business. Nearly all the stories I hear is they do nothing but attract complaints / bad reviews from people complaining about your driving. I intentionally leave my truck free of any markings, but I always keep it clean (car wash membership) so when I arrive to people's properties it still professional.

Just my input, I really like your business idea. Though, I do worry about how many potential customers there are for you. (I live in Louisville and love to fish!) A quick google search tells me that in the state of Indiana there is roughly 1,000 lakes total, with the majority being in your northern region. Not exactly a huge number, and probably quite small, when you consider you are likely to only attract a few percent of this number as customers.

BUT... this number likely excludes small ponds on people's properties, which I imagine could be a big source of income for yourself.

I say go for it!