We actually keep marketing a property and accepting back up applicants until a property is actually occupied.

Where is your data and point by point logical arguments to back up what you say? 

They have just been inundated with so many requests lately that they are putting counter offer requests on the back burner and will entertain them at another time in the future.

While yes it can easily be patched and mud back up, if your taking the time to hang new board, defeats the purpose when your filling holes and short cuttings with buckets of mud.

@Isaiah MooreAt the bottom of your letter add this:P.S.If your currently in escrow and if financing fails I'm here to give you a back up offer..

Tenant also agrees to the following:-All drains, waste pipes, and plumbing are accepted as clear by Tenant at the time of occupancy, and any material blocking them after occupancy shall be repaired at Landlord’s cost, unless determined by repair person that such blockage occurred during the time Tenant controlled the Premises and due to some fault or negligence of Tenant, specifically excluding blockages caused by roots or backups from the street.

We actually keep marketing your property and accepting back up applicants until yourproperty is actually occupied.

April and May are traditionally when sellers give up selling because season is over and most of the buyer's head back up north.

Have at least 1-2 backup options is essential in planning for a successful 1031 exchange

If a seller says a home has a new roof, deck, addition, etc. and want to get credit for the value add, but there's no permit to back up the claim, forget it.