I called Myco before I bought a 1993 35 on a steel tandem. They said no prob trailer is made for the 35. Towed for 7 yrs works great. Tri does look nice but boat will appear longer with the tandem. I can't tell any major differences with towing the new tri now vs. the old boat.

Really is personal preference, tandem will save some $$ in the long run.
Almost all tractor trailer rigs pull tandem axles.