Mine require a 3/4 throttle burst to get them to pop up after launching. I release the pin, turn the tiller and apply power doing one at a time. Getting them back under either requires jumping in the water and forcing them back under (Easy enough when scuba diving as I already have my drysuit on), or I built a pulley rig to pull them back under when needed. Since my wheels protect my motor, if I am beach launching they are always down coming and going from shore.
I would do the same on a smaller boat and imagine the smaller wheels would be fairly easy to get back underneath.
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