Tom,
With the PB and a little planning we never needed wheels.
IF you look at an aerial shot of the landings where most of the surf and dink flipping takes place, to one side of the sandy beach area, left or right, you will see a rocky area. We would sit in the cockpit, have a coffee or hot cocoa (or other beverage of choice) and watch both areas. We found that one or the other area where the sand met the rocks had very low, or no surf. It might have been a short walk to where other boats were landing, but never to far. We would then go for that area. The deflatables would always avoid that area at all costs, due to the worry about puncturing a tube. We, with the PB had NO PROBLEM..... We NEVER had a problem, other than spilling the evening wine (red wine stains you know) in the cockpit as we enjoyed the show of the tube boats trying to go through the surf. GREAT entertainment!
We also do not use the oars that came with the PB. They are JUNK. We have a set of solid wood oars the same size as yours. We also have a spare set of wood that are two parts each. They are 7 foot but I don't think they make ones like our any longer. We bought two sets of new oar locks like in the photo below. They are trapped on the oars by the paddle and an oar sleeves I added.
By the way, almost ALL of the surf areas are on the outside of the Baja and south of Mazatlan on the mainland. Almost NO surf in the Sea of Cortez. Of another note, most of the GREAT fishing, is close to the rocky area avoided by the tube craft. Good for us!!!
Greg