Prop pitch vs. elevation

[BURLEY]

Three years ago when BFT did the DAV thing at Strawberry,  I took my boat and joined in. With only one veteran and myself in the boat I had a very hard time getting on plane. I have a 16ft. Tracker with a 60hp motor jetted for 4000ft. elevation. Since then I found out that I needed a different pitch for the elevation. I got a prop from I-boats with the recommended pitch. It has been in my boat's battery compartment ever since. A couple weeks ago I went back up the the Berry to redeem myself after Kent out fished me 110 to 11 a few days before. Well my fishing didn't improve (12 fish) and I forgot to change out the propeller. I did get on plane , but didn't get my full rpm. Last week I changed the prop and went back. I  was able to get on plane like normal and get my recommended full rpm of 5800. 
     Elevation            original prop 11pitch       New prop 9 pitch
CJ Strike 3000ft         6050 rpm (over speed)        ?
Willard   4000ft          5800 rpm (normal               ?
Berry     8000ft          5000 rpm                        5800 rpm
Now I know what a difference in elevation  and pitch can make. 
BTW I did a little trolling after testing the new prop. Pulled a large lipped crankbait on a long line on one pole and 2 colors of leaded line pulling various rapalas on the other. Got many more bites than I caught. I didn't keep count, but I think  about a dozen got netted during the two hours that I was there. The leaded line got most of the action. If I fished there more, I would have to consider downriggers, but I don't often chase slimmers. snicker, snicker