Bulb is my first suspect for replacing. Sounds like air is leaking when i pump it, also suspect the hose clamps, maybe the inferior off brand type was used(by previous owner). I plan on replacing both bulb and clamps and trying at a lake closer to home. Any other suggestions on what most likely is causing this or how to proceed? Just no decent repar shops i have found within 100 miles of Memphis so I am doing this myself.

Only upside to whole trip was i was stuck by the ramp area and using 2 1/2 ounce 6 inch long jigging spoons (i was going to target the white bass ), got into some monstrous crappies, kept 3 for a weight of 6.5 lbs the rest i let go.

Do you have an in line fuel filter?  If you don't, you should.  You should certainly replace any fuel filter frequently, especially with E-10 and with the older tank.  Check the screen on the engine.  If it is clogged or leaking, clean it. 

If you can borrow a clean 3 or 6 gallon tank, mix oil and gas and add 3oz per gallon Sea Foam and run it through the engine.  Sea Foam has been a life saver several times for me.

Life is too short to catch little fish.

I had a very very similar problem with the same symptoms happen with my 89 johnson 70HP after overwintering. I took the carbs off, took them apart and found a lot of gunky stuff that looked like fish food in them. It didnt look like tank trash. Cleaned them up and put back together.......Ran like a top.

Cost...two cans of gumout.   If your other fixes dont work you might try the carbs. Its an easy simple job.