The quick answer is YES....and many people do just that.
Of course, it will depend on the size of the MH, as well as the driver's ability and desire to drive in close quarters.
It will also depend a lot on where you want to visit? Lots of large attractions will have parking for RVs and Buses, so it's no issue....but there are other places that are smaller, and may have limited access.
Best advice I can give, is to ask about particular places (either on this forum or by calling the attraction itself).
I sure wouldn't let not having a toad or a rental, keep me from visiting some of the places on our trip! You just have to be a bit more creative in your parking and such...after all, the MH will usually take up 2 parking spaces, and if they don't have that type parking, you may be in trouble.
Good luck, Happy Camping:)