What you want is the entire boat on the bunks but in a way where the back of the boat keeps the back of the hoist lower than the front.....Reason is that if it rains you want the water to run to the back of the boat!!!!!

I may be retarded, but all of the lifts I have ever had experience with have had all the lines T'd together. 4 valves or not, they all should be opened to fill & the lines should be tied together with T's.
The fill lines should really run the length of the center of the lift & should branch of from that line. If you have 2 blowers they should tie together also to feed all tanks.
Lastly, the boat should really lift evenly front to back. I've never seen anyone lift one like that, but then again, I'm not exactly educated like some are.

I worked for Hydrohoist in germany ,,,i actually helped inventing the 4 valve system and i hate to let you know that we only used 1 blower and 4 valves to push it up and the lines where T'd in front of the valves !!!! each pipe should work separate from each other ,,,or it will be hard to work !!

It also depends if its a free floater or a dock mounted lift !!!!

Be that as it may, but here in the greatest country on the face of the Earth, some of us believe that if a little do a little good, a lot do a lot of good. We "Fix" stuff to work.

??????? W H A T ????????


Show me 1 US design that works !

And hey,,i am born here ! Just so u know .

38 top gun, I never had spring lines at all ( maybe should have) but never had a problem slipping....they stick pretty well to the bunks