I have a Savlor Riviera and have a pump like this (not this one but simlar) it does the large chambers as well as any smaller bits with the normal small valves Mines hard in about 5 minutes of fast pumping http://m.ebay.co.uk/itm/16-INCH-NEW...UMP-BLOW-UP-INFLATABLE-AIR-PUMP-/131295686476
Ive started charging people,helped a guy the other day adjust his timing with a timing light in Sweden. Cash upfront or no help. I charge 20 quid for 45 minutes for kayaks,100 quid for 2 hours for bays....