svelte, we always consult an attorney wrt most of our business dealings–even if they don’t involve a partnership agreement–so, personally, I highly recommend that option, as long as you trust that person. In our case, we have family members who are lawyers, and they haven’t let us down yet.
Taking that route has saved us from some deals that might not have gone well, and has also encouraged us to invest in some projects we might have missed out on without an expert opinion.
Hope you and your son come to a conclusion that works out well for everyone concerned.
