I guess I'm just lazy. I jumper my full-size boat battery to the 'charging' battery leads, full choke, remove gas cap and crank away. I stop after 20-30 seconds to let the starter cool down, do this 2X more and it fires right up (both my 07 Rage and 08 Vector). This also ensures the entire engine is pre-lubed before it actually fires. Don't know if this is better or worse but I've been doing it this way with the Rage for 4 years and Vector for 3 with no ill effects. Finding the vent hose is somewhat tricky, especially on the 08 Vector that has the newer bodywork/side panels/etc.
Perhaps the most frustrating part is when I go to start my wife's 600 Polaris, it fires up in 5-10 seconds after sitting with dry carbs all spring-summer-fall.
There's gotta be a better OEM solution than this. Of course with fuel injection you don't have this problem at all as the lines stay pressurized.....and now that all the Yami's are FI I guess it's a non-event for them......