We've stayed at Sparks Marina a couple of times in our old 35' coach. Even with it, we found it difficult to make the turn off of McCarran onto Lincoln. I would not attempt this turn in our 44' coach. If I ever return there, I would get off on Sparks Blvd and then make my way (very carefully) through the two round-a-bouts on Lincoln. Even this way is not preferable to me. So, we have changed out stop for the day at Silver City RV park in Carson city. Plus being able to get fuel there so easily, is a huge plus.
I do agree, it's a very nice park, but the pull throughs are not long enough to keep your toad attached. They did allow us to do just that, but they had to put orange cones around the rear of the toad sticking out into the drive way. Also, last time we were there was during spring time and the front of the coach was covered with suicidal bugs. I was washing them off (with hose and squeegee and promptly got chewed out by management. Said no washing of coaches was allowed....even the windshield if using a water hose.
Ron