Rotostop as River 350, Owner'S Manual

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7. Landing, lifting and transport
The vessel should not be towed on the ground, as this could cause damage to the bottom.
When transporting over land, your River should be lifted using lifting straps. When
transporting on a trailer, make sure that the hull does not rest against sharp edges, and that
the vessel rests in both specified places (see illustration). The boat must not be transported
or stored on a standard boat trailer with a few pulleys / supports, which gives a high point
load and can lead to permanent deformation. The most ideal would be boat trailers adapted
to rotationally moulded boats with long wheelbases on each side to distribute the point load
well over a large area. The boat must be secured / strapped properly for transport but
should not be strapped with great force or stand with tightened straps over time as this can
cause deformations on the boat.
Since the boat in practice stays completely straight and stably resting on the two side
pontoons, a standard goods trailer can also function as a perfect means of transport.
For transport and storage long longitudinal
beams, or wheel tracks, should be used in
the designated places shown in the
illustration. If the two outer positions are
used, nothing is needed along the keel.
8. Ordinary maintenance
Your River is delivered ready for use from the factory/dealer. During the season, small
demands are made on maintenance beyond normal cleaning. Almost all means can be used
for cleaning. The plastic can withstand everything from ordinary household products to
heavier solvents. It is still recommended to test on a small visible field to see if discoloration
or changes in the surface form. Minor scratches, scuffs and damage can be easily sanded
down and polished up again to a nice surface. The boat can be treated with a special
antifouling and primer system that adheres to polyethylene plastic. Contact your dealer or
manufacturer for a detailed description.
Any condensed water inside must be drained from the drain valves on each side aft.
9. Boat storage
In storage, the vessel should be stored dry and covered. The vessel is stored by supporting
under the side keels at the rear and the centre keel at the very front so that the rest of the
centre keel is hanging in the air. As a good rule, the storage points should be as large areas
as possible so that you do not get permanent deformations at too high a point load in a
small area.
Before placing the vessel in storage, check that the space between the inner and outer hull
does not contain significant amounts of water. If the vessel contains significant amounts of
water, the drain plug must be removed, and the vessel tilted up so that the water flows out
of the two upper drain-plugs in the aft. If necessary, use the siphon principle or a pump.
During storage on land, the drain valve / condensate plug should be open.
If the vessel is stored outdoors, it must be covered for snow load, so that this slips off and
does not remain wet and heavy on board the boat. In such extreme cases, the boat can
ultimately be deformed and damaged.